Monthly report: Surveillance Project SB4008 IFNg Tests for Bovine Tuberculosis - December 2022
Source: environment.data.gov.uk (2023-01-25)

Interferon-Gamma Testing for Bovine Tuberculosis - Monthly Reports from January 2022. These monthly reports summarise the gamma tests completed / reported during that calendar month. The report also summarises tests for the whole calendar year to the end of the current month. While all effort is made to ensure the accuracy of the test data, small errors can occur and later corrected in subsequent reports.

Cattle interferon-gamma (IFNg) tests (and test outcome) carried out between 1st Jan and 31st Dec 2009. Tests are listed by country (England, Wales, Scotland) and by Animal Health Office (AHDO) and the reason for the test. Reports contain test data for the month, the calendar year to date and total tests since rollout (23rd Oct 2006).

Please note: this dataset consists of 12 monthly reports. Data for this report was compiled from field staff inputs and laboratory test information. Subsequent minor data amendments may have been made after the report was originally compiled, and these corrections would appear in the following month’s report. Each report was checked and deemed correct at the time of release. Attribution statement:

Monthly Report:
Surveillance Project
SB4008 IFNg (TC0651 and
TC0751) & Antibody
(TC0077) tests for bovine
tuberculosis
Number 196
Report Period 1st - 31st December 2022
Issued 10 January 2023

Operational notes on terminology, definitions, re-test and re-samples test
outcomes:
• “Samples” refers to an individual tube of blood taken from an individual animal which is
subsequently submitted for testing. It is generally assumed that the number of samples and
the number of animals are analogous as any duplicate sample blood tube from the same
animal will not be tested. However, minor discrepancies may occur where the same animal is
tested more than once due to a request for a resample or the animal is tested twice under
different categories (for example, as a PAR-RAPID and then as part of a PAR-HERD-S).
• “Submissions” refers to an individual batch or set of samples received for testing.
Submissions may comprise 1 or more samples (for example, if an entire herd is being tested it
is usually sent as 1 submission). It is generally assumed that the number of submissions and
the number of herds are analogous.
• Retests are samples where the first ELISA assay fails and the same sample is retested on a
new ELISA plate. Each sample can be retested only once. A retest is not a reportable test
outcome.
• Resamples are where a sample has been retested and failed a second time, so that the lab
requests a new sample. This is a reportable test outcome.
• Rejects are samples that are not tested by the lab for one of the following reasons: blood
collected into wrong type of vacutainer, samples that have not been maintained at the
appropriate temperature range (22±5C), unlabelled samples, broken or cracked tubes, blood
that is extensively clotted (small clots are OK), samples received after 4pm on the day after
sample collection. Such samples are reported separately in the tables and in figure 5.
• POS (pokeweed mitogen) is a sample positive control reagent which provides a measure of
the quality/viability of the blood sample. A POS fail (< 0.45 optical density reading) may
indicate compromised blood quality as a result of collection/transportation conditions or due
the animal having an unusually low/suppressed cellular immune response.
• NEG (no-antigen control) is a sample negative control which provides a measure of the
background antigen-independent IFN- responses. A NEG fail (> 0.3 optical density reading)
may indicate a laboratory procedures problem (normally resolved during re-test) or that an
animal has unusually high background levels of IFN-g.

1. Interferon-gamma test:
Submission Reason
Explanation
Mandatory?
Possible Herd Slaughter
(PAR-HERD-S)
Parallel interferon-gamma (IFNG) blood testing
of skin test negative cattle to inform whole or
partial herd slaughters decisions
YES, if APHA are
contemplating a herd
slaughter
Persistent TB breakdowns
(OTF status withdrawn)
(PAR-P-CONF) N.B.
PAR-PERSIS from 1st April
2017
Parallel blood IFNG testing of skin test-negative
cattle in persistently infected herds that have
failed to resolve by repeated short-interval skin
testing and fulfill a minimum of biosecurity
standards.
NO (APHA discretion)
Parallel - Low Incidence
(PAR-LOW-IN) N.B.
PAR-NEW-IN from 1st April
2017
Parallel blood IFNG testing to maximise the
probability of removing all infected cattle in a
new herd breakdown as soon as possible after
confirmation of TB.
YES in Area of Low
Incidence
PAR-RAPID
Parallel blood testing of two-times IRs identified
under the severe interpretation of the skin test
used in Wales.
YES (Wales only)
PAR-IR-SEV
Parallel blood testing of all severe IRs identified
in persistent breakdown herds only (coupled
with Idexx antibody testing)
YES (Wales only)
PAR-IR-EX
Parallel IFNG blood testing of all severe IRs in
the Exit Strategy for persistent herds (coupled
with Idexx antibody testing),
and also for new breakdown herds in ITBAN
(Intermediate TB Area North) (not coupled with
IDEXX testing).
YES (Wales only)
PAR-CUL-N
Parallel IFNG blood testing to maximise the
probability of removing all infected cattle in a
new breakdown as soon as possible after
confirmation of TB where herd is situated in
badger control areas of England that have
completed at least 2 effective culls.
YES (in eligible badger
control areas of England)
PAR-CUL-P
Parallel IFNG blood testing to maximise the
probability of removing all infected cattle in a
persistent confirmed breakdown where herd is
situated within badger control areas of England
that have completed at least 2 effective culls
NO (APHA discretion in
badger control areas
England)
PAR-RECUR
England - parallel IFNG blood testing of skin
test-negative cattle in breakdown herds (in HRA
& 6-monthly-testing parts of Edge Area)
occurring within 18 months of lifting restrictions
after a previous breakdown
Wales - parallel IFNG blood testing of skin
test-negative cattle in breakdown herds
occurring within 6 months of lifting restrictions
after a previous breakdown
England - YES
Wales - NO (APHA
discretion)
PAR-CHR
Parallel IFNG blood testing of Chronic
breakdown herds i.e. where VL reactors are
disclosed at a 3rd or subsequent Short Interval
test or a SLH case after a 2nd or subsequent
Short Interval test
England only - YES
PAR-POSTM
Post movement IFNG blood test of cattle
(coupled with Idexx antibody testing)
Yes (currently Wales
ITBAN only)
PAR-OTHER
Other parallel IFNG blood testing not covered in
any of the other scenarios
NO (APHA discretion)
Test Criteria

'NSR' Herds (SER-NSR)
Modified serial IFNG blood testing of individual
skin test reactors and/or IRs in unconfirmed TB
breakdown herds to clarify their infection status
where there is evidence of non-specific
sensitisation to bovine tuberculin (the
“non-specific reactor” procedure)
NO (APHA discretion)
Suspected Fraud
(SER-FRAUD)
Modified serial IFNG blood test of suspected
fraudulent reactors to the skin test (animals with
abnormal skin swellings), in confirmed or
unconfirmed TB incidents.
NO (APHA discretion to
firm up or rule out any
suspicion of fraud and
support any
investigations)
Anomalous reaction
(SER-ANOM)
Modified serial IFNG blood test of suspected
fraudulent reactors to the skin test (animals with
abnormal skin swellings), in confirmed or
unconfirmed TB incidents.
NO (APHA discretion to
firm up or rule out any
suspicion of fraud and
support any
investigations)
Serial Other
(SER-OTHER)
Serial test – other reasons
NO (APHA Discretion)
SER-FLEXI
Extended IFNG blood test to provide flexible
test readout in a confirmed M. bovis-infected
herd where Johne's (M. a. paratuberculosis)
infection or vaccination is suspected to be
interferring with M. bovis infection detection
NO (APHA discretion)
2. IDEXX antibody test:
Submission Reason
Explanation
Mandatory?
BOV-P
Supplementary antibody testing within
persistent infected herds
NO (APHA discretion -
Eng & Wales)
BOV-OTHER
Antibody testing for reasons not covered by the
above
NO (APHA discretion -
Eng & Wales)
BOV-IR-EX
Compulsory antibody testing of IRs as part of
Exit Strategy (coupled with IFNG testing)
YES (Wales only)
BOV-IR-C
Compulsory antibody testing of severe IRs
(coupled IFNG testing)
YES (Wales only)
BOV-POSTM
Compulsory post-movement antibody test of
cattle (coupled with IFNG testing)
YES (Wales only)

Num
samples
December
2022
%
Total 2022
%
Submissions
200
2769
Samples
Total (%)
13735
100.00 %
214161
100.00 %
England
8337
60.70 %
153886
71.86 %
Wales
4834
35.19 %
55846
26.08 %
Scotland
564
4.11 %
4429
2.07 %
Parallel Tests
PAR-CHR
0
0.00 %
2862
1.34 %
PAR-CUL-N
0
0.00 %
8108
3.79 %
PAR-CUL-P
376
2.74 %
9119
4.26 %
PAR-HERD-S
2
0.01 %
490
0.23 %
PAR-IR-EX
22
0.16 %
397
0.19 %
PAR-IR-SEV
274
1.99 %
2269
1.06 %
PAR-NEW-IN
2116
15.41 %
45053
21.04 %
PAR-OTHER
460
3.35 %
3869
1.81 %
PAR-PERSIS
1085
7.90 %
18778
8.77 %
PAR-POSTM
31
0.23 %
435
0.20 %
PAR-RAPID
56
0.41 %
856
0.40 %
PAR-RECUR
7274
52.96 %
102568
47.89 %
Total(% of all samples)
11696
85.15 %
194804
90.96 %
Serial/Extended Tests
SER-ANOM
0
0.00 %
SER-FLEXI
2039
14.85 %
19351
9.04 %
SER-NSR
0
0.00 %
4
0.00 %
SER-OTHER
0
0.00 %
2
0.00 %
Total(% of all samples)
2039
14.85 %
19357
9.04 %
Total
13735
100.00 %
214161
100.00 %
Retests
Total (% of all samples)
1028
7.48 %
17051
7.96 %
England
623
4.54 %
12101
5.65 %
Wales
352
2.56 %
4575
2.14 %
Scotland
53
0.39 %
375
0.18 %
Resamples
Total (% of all samples)
870
6.33 %
13679
6.39 %
England
538
3.92 %
9795
4.57 %
Wales
288
2.10 %
3580
1.67 %
Scotland
44
0.32 %
304
0.14 %
Rejects
Total (% of all samples)
274
1.99 %
1345
0.63 %
England
159
1.16 %
970
0.45 %
Wales
28
0.20 %
283
0.13 %
Scotland
87
0.63 %
92
0.04 %
Table 1. Monthly Totals for December 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN
(PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new infection in cull area,
PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with
concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor, SER-FRAUD: serial potential fraud, SER-OTHER: serial
other

PAR-CUL-P
PAR-HERD-S
PAR-IR-EX
PAR-IR-SEV
PAR-NEW-IN
PAR-OTHER
PAR-PERSIS
PAR-POSTM
PAR-RAPID
PAR-RECUR
SER-FLEXI
Breakdown of
Reason for
submission
PAR-CUL-P
376
2.7 %
PAR-HERD-S
2
0.0 %
PAR-IR-EX
22
0.2 %
PAR-IR-SEV
274
2.0 %
PAR-NEW-IN
2116
15.4 %
PAR-OTHER
460
3.3 %
PAR-PERSIS
1085
7.9 %
PAR-POSTM
31
0.2 %
PAR-RAPID
56
0.4 %
PAR-RECUR
7274
53.0 %
SER-FLEXI
2039
14.8 %
Total
13735
100.00 %
Figure 1. Number of samples submitted in each category during December 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN
(PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new infection in cull area,
PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with
concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor, SER-FRAUD: serial potential fraud, SER-OTHER: serial
other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or
subsequent SI test

0
500
1000
1500
2000
2500
Wigtown
Ayrshire
Argyll & Bute
Shropshire
Powys
Pembs
NW Wales
NE Wales
Mid Glamorgan
Gwynedd
Gwent
Ceredigion
Carms
W Sussex
Wiltshire
Warks
Staffs
Somerset excl N
Shropshire
Oxon
Notts
Leics & Rut
Heref
Gloucs
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Cheshire
Berks
Avon
Scotland
Wales
England
SER-FLEXI
PAR-RECUR
PAR-RAPID
PAR-POSTM
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-IR-SEV
PAR-IR-EX
PAR-HERD-S
PAR-CUL-P
Breakdown of
Samples
submitted by
County
Figure 2. Number of samples submitted in each category by County during December 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence,
PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in
confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor, SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown
herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test

0
2000
4000
6000
8000
10000
12000
14000
16000
18000
20000
Wigtown
Kirkcudbright
Inverness-shire
Ayrshire
Argyll & Bute
W Glamorgan
S Wales
Shropshire
S Glamorgan
Powys
Pembs
NW Wales
NE Wales
Mid Glamorgan
Gwynedd
Gwent
Ceredigion
Carms
W Yorks
W Sussex
Worcs
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
N Somer S Glos
Notts
Northumb
Northants
Lincs
Leics & Rut
Lancashire
Kent
I of Wight
Herts
Heref
Hampshire
Gr Manchester
Gloucs
E Sussex
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Cleveland
Cheshire
Cambs
Bucks
Berks
Beds
Avon
Scotland
Wales
England
SER-OTHER
SER-NSR
SER-FLEXI
PAR-RECUR
PAR-RAPID
PAR-POSTM
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-IR-SEV
PAR-IR-EX
PAR-HERD-S
PAR-CUL-P
PAR-CUL-N
PAR-CHR
Breakdown
of Samples
submitted
by County
Figure 3. Number of samples submitted in each category by County during 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017):
parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER:
parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or
SLH case after a 2nd or subsequent SI test

Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - HRA
Avon
PAR-RECUR
6
823
5.99 %
31
3.77 %
718
87.24 %
27
3.28 %
23
2.79 %
51
6.20 %
Corn & Scilly
PAR-RECUR
3
394
2.87 %
8
2.03 %
350
88.83 %
38
9.64 %
36
9.14 %
0
0.00 %
Devon
PAR-RECUR
4
741
5.39 %
26
3.51 %
666
89.88 %
52
7.02 %
49
6.61 %
0
0.00 %
Dorset
PAR-RECUR
1
19
0.14 %
1
5.26 %
18
94.74 %
1
5.26 %
0
0.00 %
0
0.00 %
Gloucs
PAR-RECUR
4
447
3.25 %
8
1.79 %
305
68.23 %
41
9.17 %
34
7.61 %
100
22.37 %
Heref
PAR-RECUR
2
772
5.62 %
17
2.20 %
691
89.51 %
73
9.46 %
64
8.29 %
0
0.00 %
Shropshire
PAR-PERSIS
2
26
0.19 %
1
3.85 %
23
88.46 %
2
7.69 %
2
7.69 %
0
0.00 %
PAR-RECUR
6
787
5.73 %
8
1.02 %
738
93.77 %
47
5.97 %
41
5.21 %
0
0.00 %
Somerset excl N
PAR-RECUR
2
31
0.23 %
0
0.00 %
25
80.65 %
7
22.58 %
6
19.35 %
0
0.00 %
Staffs
PAR-RECUR
2
591
4.30 %
17
2.88 %
545
92.22 %
39
6.60 %
29
4.91 %
0
0.00 %
Wiltshire
PAR-RECUR
4
773
5.63 %
14
1.81 %
713
92.24 %
46
5.95 %
42
5.43 %
4
0.52 %
England - Edge
Berks
PAR-RECUR
1
45
0.33 %
1
2.22 %
42
93.33 %
2
4.44 %
2
4.44 %
0
0.00 %
Cheshire
PAR-CUL-P
1
376
2.74 %
3
0.80 %
337
89.63 %
38
10.11 %
36
9.57 %
0
0.00 %
PAR-NEW-IN
1
5
0.04 %
0
0.00 %
4
80.00 %
1
20.00 %
1
20.00 %
0
0.00 %
Derbyshire
PAR-RECUR
3
710
5.17 %
19
2.68 %
615
86.62 %
86
12.11 %
75
10.56 %
1
0.14 %
Leics & Rut
PAR-NEW-IN
2
88
0.64 %
3
3.41 %
77
87.50 %
9
10.23 %
8
9.09 %
0
0.00 %
Notts
PAR-NEW-IN
1
28
0.20 %
1
3.57 %
26
92.86 %
1
3.57 %
1
3.57 %
0
0.00 %
Oxon
PAR-NEW-IN
4
232
1.69 %
12
5.17 %
194
83.62 %
34
14.66 %
26
11.21 %
0
0.00 %
PAR-RECUR
3
531
3.87 %
13
2.45 %
499
93.97 %
23
4.33 %
18
3.39 %
1
0.19 %
Warks
PAR-OTHER
1
344
2.50 %
42
12.21 %
281
81.69 %
28
8.14 %
21
6.10 %
0
0.00 %
PAR-RECUR
2
377
2.74 %
10
2.65 %
349
92.57 %
21
5.57 %
18
4.77 %
0
0.00 %
England - LRA
Cumbria
PAR-NEW-IN
1
192
1.40 %
1
0.52 %
184
95.83 %
6
3.13 %
5
2.60 %
2
1.04 %
W Sussex
PAR-NEW-IN
1
5
0.04 %
0
0.00 %
4
80.00 %
1
20.00 %
1
20.00 %
0
0.00 %
England
57
8337
60.70 %
236
2.83 %
7404
88.81 %
623
7.47 %
538
6.45 %
159
1.91 %
Wales - High TB
Carms
PAR-IR-EX
1
1
0.01 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
PAR-IR-SEV
3
13
0.09 %
1
7.69 %
12
92.31 %
0
0.00 %
0
0.00 %
0
0.00 %
Table 2a. Summary by County for December 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N:
new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2a. Summary by County for December 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-OTHER
2
11
0.08 %
0
0.00 %
10
90.91 %
1
9.09 %
1
9.09 %
0
0.00 %
PAR-PERSIS
2
5
0.04 %
1
20.00 %
4
80.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
4
4
0.03 %
1
25.00 %
3
75.00 %
1
25.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-IR-SEV
3
19
0.14 %
8
42.11 %
8
42.11 %
4
21.05 %
3
15.79 %
0
0.00 %
PAR-RAPID
1
1
0.01 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
4
858
6.25 %
49
5.71 %
755
88.00 %
57
6.64 %
47
5.48 %
7
0.82 %
Gwent
PAR-IR-SEV
4
33
0.24 %
14
42.42 %
19
57.58 %
1
3.03 %
0
0.00 %
0
0.00 %
PAR-RAPID
3
5
0.04 %
1
20.00 %
4
80.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Pembs
PAR-IR-EX
7
16
0.12 %
4
25.00 %
11
68.75 %
1
6.25 %
1
6.25 %
0
0.00 %
PAR-IR-SEV
17
151
1.10 %
42
27.81 %
96
63.58 %
15
9.93 %
13
8.61 %
0
0.00 %
PAR-RAPID
4
10
0.07 %
4
40.00 %
6
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
18
0.13 %
0
0.00 %
16
88.89 %
2
11.11 %
1
5.56 %
1
5.56 %
SER-FLEXI
8
555
4.04 %
39
7.03 %
479
86.31 %
39
7.03 %
34
6.13 %
3
0.54 %
Powys
PAR-IR-EX
1
1
0.01 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
PAR-IR-SEV
1
12
0.09 %
1
8.33 %
11
91.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
2
59
0.43 %
1
1.69 %
55
93.22 %
5
8.47 %
3
5.08 %
0
0.00 %
PAR-PERSIS
4
73
0.53 %
7
9.59 %
62
84.93 %
3
4.11 %
2
2.74 %
2
2.74 %
PAR-RAPID
8
25
0.18 %
4
16.00 %
20
80.00 %
1
4.00 %
1
4.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-HERD-S
1
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-RAPID
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Mid Glamorgan
PAR-RAPID
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-SEV
2
23
0.17 %
5
21.74 %
15
65.22 %
3
13.04 %
3
13.04 %
0
0.00 %
PAR-NEW-IN
4
38
0.28 %
0
0.00 %
29
76.32 %
10
26.32 %
9
23.68 %
0
0.00 %
PAR-PERSIS
2
879
6.40 %
18
2.05 %
828
94.20 %
44
5.01 %
31
3.53 %
2
0.23 %
PAR-POSTM
4
13
0.09 %
2
15.38 %
9
69.23 %
1
7.69 %
1
7.69 %
1
7.69 %
PAR-RAPID
3
4
0.03 %
1
25.00 %
3
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
3
220
1.60 %
26
11.82 %
168
76.36 %
32
14.55 %
25
11.36 %
1
0.45 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N:
new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2a. Summary by County for December 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
Powys
PAR-IR-EX
1
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
0
0.00 %
PAR-IR-SEV
1
14
0.10 %
5
35.71 %
8
57.14 %
1
7.14 %
1
7.14 %
0
0.00 %
PAR-NEW-IN
5
75
0.55 %
2
2.67 %
63
84.00 %
10
13.33 %
10
13.33 %
0
0.00 %
PAR-OTHER
1
46
0.33 %
4
8.70 %
41
89.13 %
2
4.35 %
1
2.17 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
214
1.56 %
4
1.87 %
193
90.19 %
17
7.94 %
17
7.94 %
0
0.00 %
Shropshire
PAR-PERSIS
1
88
0.64 %
6
6.82 %
75
85.23 %
6
6.82 %
5
5.68 %
2
2.27 %
Wales - Low TB
Gwynedd
PAR-IR-SEV
1
6
0.04 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
4
443
3.23 %
7
1.58 %
416
93.91 %
26
5.87 %
19
4.29 %
1
0.23 %
PAR-PERSIS
1
14
0.10 %
0
0.00 %
10
71.43 %
4
28.57 %
4
28.57 %
0
0.00 %
PAR-POSTM
1
5
0.04 %
0
0.00 %
5
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-EX
1
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
0
0.00 %
PAR-IR-SEV
2
3
0.02 %
0
0.00 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
4
446
3.25 %
5
1.12 %
406
91.03 %
35
7.85 %
28
6.28 %
7
1.57 %
PAR-POSTM
5
12
0.09 %
1
8.33 %
11
91.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
2
406
2.96 %
39
9.61 %
342
84.24 %
27
6.65 %
24
5.91 %
1
0.25 %
NW Wales
PAR-POSTM
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales
137
4834
35.19 %
304
6.29 %
4214
87.17 %
352
7.28 %
288
5.96 %
28
0.58 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
3
442
3.22 %
4
0.90 %
364
82.35 %
44
9.95 %
37
8.37 %
37
8.37 %
Ayrshire
PAR-NEW-IN
2
39
0.28 %
1
2.56 %
33
84.62 %
6
15.38 %
5
12.82 %
0
0.00 %
Wigtown
PAR-NEW-IN
1
83
0.60 %
0
0.00 %
31
37.35 %
3
3.61 %
2
2.41 %
50
60.24 %
Scotland
6
564
4.11 %
5
0.89 %
428
75.89 %
53
9.40 %
44
7.80 %
87
15.43 %
Grand Total
Sum:
200
13735
545
12046
1028
870
274
*For test criteria please refer to Operational notes.
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N:
new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - HRA
Avon
PAR-CHR
4
257
0.12 %
22
8.56 %
212
82.49 %
27
10.51 %
23
8.95 %
0
0.00 %
PAR-CUL-N
3
527
0.25 %
26
4.93 %
485
92.03 %
16
3.04 %
15
2.85 %
1
0.19 %
PAR-CUL-P
2
222
0.10 %
20
9.01 %
173
77.93 %
37
16.67 %
29
13.06 %
0
0.00 %
PAR-NEW-IN
1
77
0.04 %
2
2.60 %
64
83.12 %
16
20.78 %
11
14.29 %
0
0.00 %
PAR-OTHER
2
54
0.03 %
11
20.37 %
35
64.81 %
9
16.67 %
8
14.81 %
0
0.00 %
PAR-PERSIS
3
347
0.16 %
20
5.76 %
304
87.61 %
27
7.78 %
23
6.63 %
0
0.00 %
PAR-RECUR
47
6,588
3.08 %
436
6.62 %
5768
87.55 %
418
6.34 %
323
4.90 %
61
0.93 %
Corn & Scilly
PAR-CHR
2
197
0.09 %
9
4.57 %
166
84.26 %
22
11.17 %
22
11.17 %
0
0.00 %
PAR-CUL-N
7
595
0.28 %
54
9.08 %
520
87.39 %
32
5.38 %
21
3.53 %
0
0.00 %
PAR-CUL-P
11
2,062
0.96 %
60
2.91 %
1864
90.40 %
176
8.54 %
135
6.55 %
3
0.15 %
PAR-OTHER
1
102
0.05 %
1
0.98 %
98
96.08 %
4
3.92 %
3
2.94 %
0
0.00 %
PAR-PERSIS
10
1,862
0.87 %
73
3.92 %
1656
88.94 %
160
8.59 %
133
7.14 %
0
0.00 %
PAR-RECUR
86
12,459
5.82 %
487
3.91 %
10945
87.85 %
1209
9.70 %
1014
8.14 %
13
0.10 %
Devon
PAR-CHR
6
496
0.23 %
6
1.21 %
446
89.92 %
51
10.28 %
44
8.87 %
0
0.00 %
PAR-CUL-N
20
1,897
0.89 %
116
6.11 %
1600
84.34 %
198
10.44 %
174
9.17 %
7
0.37 %
PAR-CUL-P
7
1,197
0.56 %
47
3.93 %
1051
87.80 %
114
9.52 %
94
7.85 %
5
0.42 %
PAR-HERD-S
2
288
0.13 %
50
17.36 %
225
78.13 %
27
9.38 %
13
4.51 %
0
0.00 %
PAR-OTHER
1
9
0.00 %
1
11.11 %
7
77.78 %
1
11.11 %
1
11.11 %
0
0.00 %
PAR-PERSIS
13
2,145
1.00 %
87
4.06 %
1909
89.00 %
179
8.34 %
146
6.81 %
3
0.14 %
PAR-RECUR
95
13,020
6.08 %
587
4.51 %
11467
88.07 %
1157
8.89 %
950
7.30 %
16
0.12 %
SER-FLEXI
2
145
0.07 %
4
2.76 %
128
88.28 %
11
7.59 %
9
6.21 %
4
2.76 %
Dorset
PAR-CUL-N
5
1,423
0.66 %
58
4.08 %
1279
89.88 %
100
7.03 %
83
5.83 %
3
0.21 %
PAR-OTHER
4
71
0.03 %
1
1.41 %
68
95.77 %
2
2.82 %
2
2.82 %
0
0.00 %
PAR-RECUR
14
1,737
0.81 %
74
4.26 %
1542
88.77 %
148
8.52 %
121
6.97 %
0
0.00 %
SER-FLEXI
2
43
0.02 %
7
16.28 %
34
79.07 %
2
4.65 %
2
4.65 %
0
0.00 %
Gloucs
PAR-CUL-N
7
320
0.15 %
23
7.19 %
247
77.19 %
51
15.94 %
47
14.69 %
3
0.94 %
Table 2b. Summary by County for 2022
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-CUL-P
1
195
0.09 %
7
3.59 %
170
87.18 %
17
8.72 %
17
8.72 %
1
0.51 %
PAR-OTHER
2
64
0.03 %
2
3.13 %
56
87.50 %
7
10.94 %
6
9.38 %
0
0.00 %
PAR-RECUR
43
6,087
2.84 %
228
3.75 %
5367
88.17 %
480
7.89 %
387
6.36 %
105
1.72 %
Heref
PAR-CUL-P
2
625
0.29 %
32
5.12 %
570
91.20 %
35
5.60 %
23
3.68 %
0
0.00 %
PAR-HERD-S
2
69
0.03 %
13
18.84 %
48
69.57 %
13
18.84 %
8
11.59 %
0
0.00 %
PAR-OTHER
6
545
0.25 %
32
5.87 %
488
89.54 %
42
7.71 %
25
4.59 %
0
0.00 %
PAR-PERSIS
9
1,132
0.53 %
61
5.39 %
975
86.13 %
104
9.19 %
93
8.22 %
3
0.27 %
PAR-RECUR
67
8,577
4.00 %
291
3.39 %
7644
89.12 %
660
7.69 %
511
5.96 %
131
1.53 %
N Somer S Glos
PAR-RECUR
2
61
0.03 %
2
3.28 %
54
88.52 %
11
18.03 %
5
8.20 %
0
0.00 %
Shropshire
PAR-CHR
6
1,235
0.58 %
45
3.64 %
1125
91.09 %
81
6.56 %
65
5.26 %
0
0.00 %
PAR-NEW-IN
2
293
0.14 %
22
7.51 %
252
86.01 %
27
9.22 %
19
6.48 %
0
0.00 %
PAR-OTHER
3
246
0.11 %
4
1.63 %
221
89.84 %
22
8.94 %
21
8.54 %
0
0.00 %
PAR-PERSIS
20
3,740
1.75 %
144
3.85 %
3371
90.13 %
287
7.67 %
224
5.99 %
1
0.03 %
PAR-RECUR
88
14,431
6.74 %
291
2.02 %
13393
92.81 %
906
6.28 %
741
5.13 %
6
0.04 %
Somerset excl N
PAR-CUL-N
2
529
0.25 %
12
2.27 %
492
93.01 %
29
5.48 %
25
4.73 %
0
0.00 %
PAR-CUL-P
3
1,791
0.84 %
46
2.57 %
1712
95.59 %
50
2.79 %
33
1.84 %
0
0.00 %
PAR-OTHER
3
87
0.04 %
15
17.24 %
65
74.71 %
8
9.20 %
7
8.05 %
0
0.00 %
PAR-PERSIS
5
472
0.22 %
18
3.81 %
427
90.47 %
33
6.99 %
27
5.72 %
0
0.00 %
PAR-RECUR
62
8,698
4.06 %
345
3.97 %
7919
91.04 %
514
5.91 %
388
4.46 %
46
0.53 %
SER-FLEXI
4
64
0.03 %
9
14.06 %
49
76.56 %
7
10.94 %
6
9.38 %
0
0.00 %
Staffs
PAR-CHR
2
436
0.20 %
4
0.92 %
419
96.10 %
19
4.36 %
13
2.98 %
0
0.00 %
PAR-CUL-N
2
263
0.12 %
6
2.28 %
214
81.37 %
43
16.35 %
43
16.35 %
0
0.00 %
PAR-CUL-P
2
426
0.20 %
11
2.58 %
402
94.37 %
17
3.99 %
13
3.05 %
0
0.00 %
PAR-OTHER
5
426
0.20 %
13
3.05 %
396
92.96 %
17
3.99 %
16
3.76 %
1
0.23 %
PAR-PERSIS
5
794
0.37 %
13
1.64 %
482
60.71 %
80
10.08 %
78
9.82 %
221
27.83 %
PAR-RECUR
49
10,552
4.93 %
305
2.89 %
9557
90.57 %
755
7.16 %
612
5.80 %
78
0.74 %
Wiltshire
PAR-CUL-N
4
312
0.15 %
20
6.41 %
267
85.58 %
27
8.65 %
25
8.01 %
0
0.00 %
PAR-CUL-P
4
727
0.34 %
53
7.29 %
609
83.77 %
54
7.43 %
50
6.88 %
15
2.06 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-NEW-IN
1
19
0.01 %
1
5.26 %
13
68.42 %
5
26.32 %
5
26.32 %
0
0.00 %
PAR-OTHER
4
178
0.08 %
22
12.36 %
137
76.97 %
24
13.48 %
19
10.67 %
0
0.00 %
PAR-PERSIS
2
70
0.03 %
7
10.00 %
46
65.71 %
20
28.57 %
17
24.29 %
0
0.00 %
PAR-RECUR
31
4,476
2.09 %
154
3.44 %
3975
88.81 %
464
10.37 %
341
7.62 %
6
0.13 %
Worcs
PAR-RECUR
8
392
0.18 %
28
7.14 %
324
82.65 %
49
12.50 %
40
10.20 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
2
148
0.07 %
0
0.00 %
95
64.19 %
14
9.46 %
9
6.08 %
44
29.73 %
PAR-RECUR
3
246
0.11 %
4
1.63 %
229
93.09 %
15
6.10 %
13
5.28 %
0
0.00 %
Bucks
PAR-CHR
1
241
0.11 %
5
2.07 %
223
92.53 %
15
6.22 %
13
5.39 %
0
0.00 %
PAR-CUL-N
1
224
0.10 %
10
4.46 %
204
91.07 %
11
4.91 %
10
4.46 %
0
0.00 %
PAR-NEW-IN
14
1,786
0.83 %
39
2.18 %
1656
92.72 %
122
6.83 %
91
5.10 %
0
0.00 %
PAR-RECUR
1
20
0.01 %
0
0.00 %
11
55.00 %
9
45.00 %
9
45.00 %
0
0.00 %
Cheshire
PAR-CUL-N
5
1,323
0.62 %
34
2.57 %
1224
92.52 %
79
5.97 %
65
4.91 %
0
0.00 %
PAR-CUL-P
8
1,802
0.84 %
15
0.83 %
1674
92.90 %
140
7.77 %
113
6.27 %
0
0.00 %
PAR-NEW-IN
6
636
0.30 %
22
3.46 %
570
89.62 %
48
7.55 %
44
6.92 %
0
0.00 %
PAR-OTHER
4
265
0.12 %
26
9.81 %
220
83.02 %
22
8.30 %
18
6.79 %
1
0.38 %
PAR-PERSIS
8
2,341
1.09 %
57
2.43 %
2166
92.52 %
168
7.18 %
115
4.91 %
3
0.13 %
PAR-RECUR
15
4,643
2.17 %
92
1.98 %
4334
93.34 %
261
5.62 %
216
4.65 %
1
0.02 %
Derbyshire
PAR-NEW-IN
8
1,207
0.56 %
23
1.91 %
1088
90.14 %
117
9.69 %
94
7.79 %
2
0.17 %
PAR-RECUR
13
2,542
1.19 %
50
1.97 %
2331
91.70 %
191
7.51 %
154
6.06 %
7
0.28 %
E Sussex
PAR-NEW-IN
7
459
0.21 %
10
2.18 %
394
85.84 %
61
13.29 %
45
9.80 %
10
2.18 %
Hampshire
PAR-CUL-N
2
60
0.03 %
2
3.33 %
46
76.67 %
12
20.00 %
12
20.00 %
0
0.00 %
PAR-NEW-IN
8
800
0.37 %
24
3.00 %
722
90.25 %
58
7.25 %
51
6.38 %
3
0.38 %
Leics & Rut
PAR-CUL-N
2
31
0.01 %
3
9.68 %
27
87.10 %
2
6.45 %
1
3.23 %
0
0.00 %
PAR-CUL-P
1
72
0.03 %
1
1.39 %
59
81.94 %
15
20.83 %
11
15.28 %
1
1.39 %
PAR-NEW-IN
24
2,765
1.29 %
127
4.59 %
2429
87.85 %
238
8.61 %
204
7.38 %
5
0.18 %
Northants
PAR-NEW-IN
17
1,466
0.68 %
28
1.91 %
1268
86.49 %
182
12.41 %
168
11.46 %
2
0.14 %
PAR-RECUR
1
114
0.05 %
1
0.88 %
93
81.58 %
11
9.65 %
20
17.54 %
0
0.00 %
Notts
PAR-CUL-N
2
451
0.21 %
9
2.00 %
422
93.57 %
31
6.87 %
19
4.21 %
1
0.22 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-NEW-IN
9
808
0.38 %
25
3.09 %
732
90.59 %
64
7.92 %
51
6.31 %
0
0.00 %
Oxon
PAR-NEW-IN
27
3,478
1.62 %
153
4.40 %
3118
89.65 %
257
7.39 %
206
5.92 %
1
0.03 %
PAR-PERSIS
2
160
0.07 %
15
9.38 %
136
85.00 %
9
5.63 %
9
5.63 %
0
0.00 %
PAR-RECUR
12
1,129
0.53 %
25
2.21 %
1011
89.55 %
103
9.12 %
90
7.97 %
3
0.27 %
Warks
PAR-NEW-IN
4
176
0.08 %
13
7.39 %
145
82.39 %
22
12.50 %
18
10.23 %
0
0.00 %
PAR-OTHER
1
344
0.16 %
42
12.21 %
281
81.69 %
28
8.14 %
21
6.10 %
0
0.00 %
PAR-RECUR
8
911
0.43 %
28
3.07 %
821
90.12 %
73
8.01 %
62
6.81 %
0
0.00 %
England - LRA
Beds
PAR-CUL-N
1
153
0.07 %
1
0.65 %
126
82.35 %
32
20.92 %
24
15.69 %
2
1.31 %
PAR-NEW-IN
2
94
0.04 %
1
1.06 %
89
94.68 %
3
3.19 %
3
3.19 %
1
1.06 %
Cambs
PAR-NEW-IN
2
73
0.03 %
1
1.37 %
67
91.78 %
4
5.48 %
4
5.48 %
1
1.37 %
Cleveland
PAR-NEW-IN
2
45
0.02 %
0
0.00 %
43
95.56 %
3
6.67 %
1
2.22 %
1
2.22 %
Cumbria
PAR-NEW-IN
10
1,160
0.54 %
10
0.86 %
1056
91.03 %
92
7.93 %
73
6.29 %
21
1.81 %
Gr Manchester
PAR-NEW-IN
7
303
0.14 %
2
0.66 %
278
91.75 %
27
8.91 %
23
7.59 %
0
0.00 %
Herts
PAR-NEW-IN
5
253
0.12 %
14
5.53 %
197
77.87 %
41
16.21 %
39
15.42 %
3
1.19 %
I of Wight
PAR-NEW-IN
1
86
0.04 %
1
1.16 %
80
93.02 %
7
8.14 %
5
5.81 %
0
0.00 %
Kent
PAR-NEW-IN
1
63
0.03 %
2
3.17 %
56
88.89 %
5
7.94 %
5
7.94 %
0
0.00 %
Lancashire
PAR-NEW-IN
9
1,783
0.83 %
27
1.51 %
1660
93.10 %
114
6.39 %
92
5.16 %
4
0.22 %
SER-NSR
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Lincs
PAR-NEW-IN
14
1,060
0.49 %
19
1.79 %
971
91.60 %
95
8.96 %
68
6.42 %
2
0.19 %
Northumb
PAR-NEW-IN
1
248
0.12 %
10
4.03 %
208
83.87 %
19
7.66 %
17
6.85 %
13
5.24 %
N Yorks
PAR-NEW-IN
9
831
0.39 %
16
1.93 %
650
78.22 %
75
9.03 %
61
7.34 %
104
12.52 %
Surrey
PAR-NEW-IN
3
453
0.21 %
7
1.55 %
408
90.07 %
48
10.60 %
38
8.39 %
0
0.00 %
W Sussex
PAR-NEW-IN
3
101
0.05 %
7
6.93 %
88
87.13 %
13
12.87 %
6
5.94 %
0
0.00 %
W Yorks
PAR-NEW-IN
6
379
0.18 %
11
2.90 %
332
87.60 %
44
11.61 %
35
9.23 %
1
0.26 %
England
1101
153886
71.86 %
5550
3.61 %
137571
89.40 %
12101
7.86 %
9795
6.37 %
970
0.63 %
Wales - High TB
Carms
PAR-IR-EX
11
40
0.02 %
11
27.50 %
27
67.50 %
2
5.00 %
2
5.00 %
0
0.00 %
PAR-IR-SEV
42
307
0.14 %
91
29.64 %
184
59.93 %
25
8.14 %
19
6.19 %
13
4.23 %
PAR-OTHER
9
156
0.07 %
16
10.26 %
125
80.13 %
13
8.33 %
12
7.69 %
3
1.92 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
12
1,111
0.52 %
39
3.51 %
995
89.56 %
75
6.75 %
54
4.86 %
23
2.07 %
PAR-RAPID
50
160
0.07 %
42
26.25 %
101
63.13 %
14
8.75 %
11
6.88 %
6
3.75 %
PAR-RECUR
22
2,079
0.97 %
86
4.14 %
1892
91.01 %
138
6.64 %
100
4.81 %
2
0.10 %
SER-FLEXI
31
3,318
1.55 %
202
6.09 %
2936
88.49 %
235
7.08 %
173
5.21 %
7
0.21 %
Ceredigion
PAR-IR-EX
11
31
0.01 %
7
22.58 %
22
70.97 %
1
3.23 %
1
3.23 %
1
3.23 %
PAR-IR-SEV
34
208
0.10 %
49
23.56 %
143
68.75 %
18
8.65 %
14
6.73 %
2
0.96 %
PAR-PERSIS
4
142
0.07 %
4
2.82 %
133
93.66 %
5
3.52 %
5
3.52 %
0
0.00 %
PAR-RAPID
22
45
0.02 %
14
31.11 %
23
51.11 %
5
11.11 %
5
11.11 %
3
6.67 %
PAR-RECUR
2
32
0.01 %
10
31.25 %
21
65.63 %
1
3.13 %
1
3.13 %
0
0.00 %
SER-FLEXI
11
1,684
0.79 %
91
5.40 %
1496
88.84 %
112
6.65 %
89
5.29 %
8
0.48 %
Gwent
PAR-IR-EX
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
20
116
0.05 %
35
30.17 %
77
66.38 %
7
6.03 %
4
3.45 %
0
0.00 %
PAR-OTHER
9
168
0.08 %
7
4.17 %
147
87.50 %
19
11.31 %
14
8.33 %
0
0.00 %
PAR-RAPID
23
59
0.03 %
9
15.25 %
44
74.58 %
8
13.56 %
6
10.17 %
0
0.00 %
PAR-RECUR
13
398
0.19 %
12
3.02 %
359
90.20 %
36
9.05 %
24
6.03 %
3
0.75 %
SER-FLEXI
13
1,328
0.62 %
64
4.82 %
1190
89.61 %
81
6.10 %
70
5.27 %
4
0.30 %
Pembs
PAR-IR-EX
49
206
0.10 %
77
37.38 %
121
58.74 %
11
5.34 %
8
3.88 %
0
0.00 %
PAR-IR-SEV
166
1,207
0.56 %
286
23.70 %
862
71.42 %
62
5.14 %
52
4.31 %
7
0.58 %
PAR-NEW-IN
1
13
0.01 %
0
0.00 %
8
61.54 %
7
53.85 %
5
38.46 %
0
0.00 %
PAR-OTHER
11
196
0.09 %
22
11.22 %
159
81.12 %
15
7.65 %
15
7.65 %
0
0.00 %
PAR-PERSIS
28
1,711
0.80 %
81
4.73 %
1467
85.74 %
203
11.86 %
153
8.94 %
10
0.58 %
PAR-RAPID
128
331
0.15 %
78
23.56 %
237
71.60 %
18
5.44 %
15
4.53 %
1
0.30 %
PAR-RECUR
22
1,766
0.82 %
69
3.91 %
1590
90.03 %
120
6.80 %
97
5.49 %
10
0.57 %
SER-FLEXI
89
8,799
4.11 %
624
7.09 %
7592
86.28 %
674
7.66 %
536
6.09 %
48
0.55 %
Powys
PAR-HERD-S
1
2
0.00 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-EX
19
50
0.02 %
8
16.00 %
39
78.00 %
5
10.00 %
3
6.00 %
0
0.00 %
PAR-IR-SEV
24
95
0.04 %
15
15.79 %
67
70.53 %
17
17.89 %
13
13.68 %
0
0.00 %
PAR-OTHER
11
335
0.16 %
19
5.67 %
294
87.76 %
28
8.36 %
22
6.57 %
0
0.00 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
10
533
0.25 %
17
3.19 %
478
89.68 %
40
7.50 %
32
6.00 %
6
1.13 %
PAR-POSTM
1
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
46
111
0.05 %
21
18.92 %
81
72.97 %
11
9.91 %
9
8.11 %
0
0.00 %
PAR-RECUR
18
606
0.28 %
16
2.64 %
553
91.25 %
52
8.58 %
36
5.94 %
1
0.17 %
SER-FLEXI
13
881
0.41 %
53
6.02 %
736
83.54 %
110
12.49 %
90
10.22 %
2
0.23 %
S Wales
PAR-IR-SEV
4
20
0.01 %
7
35.00 %
12
60.00 %
2
10.00 %
1
5.00 %
0
0.00 %
PAR-PERSIS
2
18
0.01 %
7
38.89 %
10
55.56 %
1
5.56 %
1
5.56 %
0
0.00 %
PAR-RAPID
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
W Glamorgan
PAR-IR-SEV
1
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
2
35
0.02 %
8
22.86 %
25
71.43 %
2
5.71 %
2
5.71 %
0
0.00 %
PAR-RAPID
2
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
45
0.02 %
4
8.89 %
37
82.22 %
4
8.89 %
4
8.89 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-HERD-S
2
23
0.01 %
4
17.39 %
17
73.91 %
3
13.04 %
2
8.70 %
0
0.00 %
PAR-IR-SEV
4
17
0.01 %
4
23.53 %
7
41.18 %
2
11.76 %
2
11.76 %
4
23.53 %
PAR-OTHER
3
23
0.01 %
0
0.00 %
15
65.22 %
6
26.09 %
6
26.09 %
2
8.70 %
PAR-PERSIS
3
16
0.01 %
0
0.00 %
14
87.50 %
2
12.50 %
2
12.50 %
0
0.00 %
PAR-RAPID
4
9
0.00 %
2
22.22 %
7
77.78 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
38
0.02 %
1
2.63 %
30
78.95 %
3
7.89 %
3
7.89 %
4
10.53 %
SER-FLEXI
2
145
0.07 %
10
6.90 %
127
87.59 %
9
6.21 %
8
5.52 %
0
0.00 %
Ceredigion
PAR-IR-SEV
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-POSTM
1
13
0.01 %
1
7.69 %
11
84.62 %
0
0.00 %
0
0.00 %
1
7.69 %
PAR-RAPID
3
18
0.01 %
5
27.78 %
13
72.22 %
5
27.78 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
3
0.00 %
0
0.00 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
6
540
0.25 %
17
3.15 %
492
91.11 %
46
8.52 %
29
5.37 %
2
0.37 %
Mid Glamorgan
PAR-RAPID
4
7
0.00 %
1
14.29 %
4
57.14 %
2
28.57 %
2
28.57 %
0
0.00 %
NE Wales
PAR-HERD-S
2
67
0.03 %
3
4.48 %
59
88.06 %
5
7.46 %
5
7.46 %
0
0.00 %
PAR-IR-EX
13
46
0.02 %
7
15.22 %
36
78.26 %
3
6.52 %
3
6.52 %
0
0.00 %
PAR-IR-SEV
37
243
0.11 %
33
13.58 %
199
81.89 %
10
4.12 %
9
3.70 %
2
0.82 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-NEW-IN
99
8,184
3.82 %
198
2.42 %
7398
90.40 %
730
8.92 %
564
6.89 %
24
0.29 %
PAR-OTHER
4
72
0.03 %
4
5.56 %
58
80.56 %
18
25.00 %
10
13.89 %
0
0.00 %
PAR-PERSIS
16
1,889
0.88 %
58
3.07 %
1744
92.32 %
102
5.40 %
83
4.39 %
4
0.21 %
PAR-POSTM
50
190
0.09 %
17
8.95 %
165
86.84 %
10
5.26 %
7
3.68 %
1
0.53 %
PAR-RAPID
31
59
0.03 %
12
20.34 %
47
79.66 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
475
0.22 %
6
1.26 %
413
86.95 %
58
12.21 %
54
11.37 %
2
0.42 %
SER-FLEXI
18
1,487
0.69 %
108
7.26 %
1276
85.81 %
115
7.73 %
86
5.78 %
17
1.14 %
Powys
PAR-IR-EX
2
3
0.00 %
0
0.00 %
2
66.67 %
1
33.33 %
1
33.33 %
0
0.00 %
PAR-IR-SEV
4
26
0.01 %
7
26.92 %
18
69.23 %
2
7.69 %
1
3.85 %
0
0.00 %
PAR-NEW-IN
31
3,462
1.62 %
111
3.21 %
3106
89.72 %
294
8.49 %
225
6.50 %
20
0.58 %
PAR-OTHER
5
319
0.15 %
12
3.76 %
273
85.58 %
42
13.17 %
34
10.66 %
0
0.00 %
PAR-PERSIS
1
8
0.00 %
0
0.00 %
8
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-POSTM
5
7
0.00 %
0
0.00 %
5
71.43 %
3
42.86 %
2
28.57 %
0
0.00 %
PAR-RAPID
7
13
0.01 %
3
23.08 %
10
76.92 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
214
0.10 %
4
1.87 %
193
90.19 %
17
7.94 %
17
7.94 %
0
0.00 %
S Glamorgan
PAR-OTHER
3
9
0.00 %
3
33.33 %
5
55.56 %
1
11.11 %
1
11.11 %
0
0.00 %
PAR-RAPID
9
20
0.01 %
10
50.00 %
10
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
115
0.05 %
26
22.61 %
72
62.61 %
21
18.26 %
17
14.78 %
0
0.00 %
Shropshire
PAR-IR-EX
2
5
0.00 %
0
0.00 %
3
60.00 %
2
40.00 %
2
40.00 %
0
0.00 %
PAR-IR-SEV
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
88
0.04 %
6
6.82 %
75
85.23 %
6
6.82 %
5
5.68 %
2
2.27 %
W Glamorgan
PAR-RECUR
2
113
0.05 %
3
2.65 %
101
89.38 %
9
7.96 %
9
7.96 %
0
0.00 %
Wales - Low TB
Gwynedd
PAR-HERD-S
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-EX
3
11
0.01 %
1
9.09 %
10
90.91 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
2
7
0.00 %
0
0.00 %
7
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
67
3,914
1.83 %
117
2.99 %
3421
87.40 %
434
11.09 %
370
9.45 %
6
0.15 %
PAR-OTHER
4
9
0.00 %
0
0.00 %
7
77.78 %
1
11.11 %
1
11.11 %
1
11.11 %
PAR-PERSIS
2
162
0.08 %
5
3.09 %
139
85.80 %
25
15.43 %
18
11.11 %
0
0.00 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2b. Summary by County for 2022 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-POSTM
36
120
0.06 %
7
5.83 %
110
91.67 %
5
4.17 %
3
2.50 %
0
0.00 %
PAR-RAPID
4
6
0.00 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-HERD-S
2
40
0.02 %
4
10.00 %
28
70.00 %
8
20.00 %
8
20.00 %
0
0.00 %
PAR-IR-EX
3
4
0.00 %
0
0.00 %
3
75.00 %
1
25.00 %
1
25.00 %
0
0.00 %
PAR-IR-SEV
4
18
0.01 %
1
5.56 %
15
83.33 %
2
11.11 %
2
11.11 %
0
0.00 %
PAR-NEW-IN
50
4,006
1.87 %
70
1.75 %
3704
92.46 %
285
7.11 %
203
5.07 %
29
0.72 %
PAR-OTHER
5
156
0.07 %
9
5.77 %
131
83.97 %
24
15.38 %
16
10.26 %
0
0.00 %
PAR-PERSIS
3
37
0.02 %
9
24.32 %
25
67.57 %
5
13.51 %
3
8.11 %
0
0.00 %
PAR-POSTM
53
102
0.05 %
7
6.86 %
89
87.25 %
8
7.84 %
5
4.90 %
1
0.98 %
PAR-RAPID
7
15
0.01 %
4
26.67 %
10
66.67 %
2
13.33 %
1
6.67 %
0
0.00 %
PAR-RECUR
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
6
917
0.43 %
84
9.16 %
770
83.97 %
71
7.74 %
62
6.76 %
1
0.11 %
NW Wales
PAR-POSTM
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - UNKNOWN
Carms
PAR-IR-SEV
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales
1632
55846
26.08 %
3198
5.73 %
48787
87.36 %
4575
8.19 %
3580
6.41 %
283
0.51 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
3
442
0.21 %
4
0.90 %
364
82.35 %
44
9.95 %
37
8.37 %
37
8.37 %
SER-NSR
1
3
0.00 %
0
0.00 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-OTHER
1
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ayrshire
PAR-NEW-IN
9
590
0.28 %
33
5.59 %
508
86.10 %
59
10.00 %
47
7.97 %
2
0.34 %
Inverness-shire
PAR-NEW-IN
2
128
0.06 %
2
1.56 %
111
86.72 %
15
11.72 %
15
11.72 %
0
0.00 %
Kirkcudbright
PAR-NEW-IN
4
493
0.23 %
8
1.62 %
432
87.63 %
67
13.59 %
53
10.75 %
0
0.00 %
Wigtown
PAR-NEW-IN
16
2,771
1.29 %
79
2.85 %
2487
89.75 %
190
6.86 %
152
5.49 %
53
1.91 %
Scotland
36
4429
2.07 %
126
2.84 %
3907
88.21 %
375
8.47 %
304
6.86 %
92
2.08 %
Grand Total
Sum:
xx-xxxx-xxxx
8874
190265
17051
13679
1345
*For test criteria please refer to Operational notes.
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 3a. Summary of IFN Gamma results by country and protocol December 2022
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
57
8337
100.0%
236
2.8%
7404
88.8%
623
7.5%
538
6.5%
159
1.9%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
57
8337
100.0%
236
2.8%
7404
88.8%
623
7.5%
538
6.5%
159
1.9%
Scotland
Parallel
6
564
100.0%
5
0.9%
428
75.9%
53
9.4%
44
7.8%
87
15.4%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
6
564
100.0%
5
0.9%
428
75.9%
53
9.4%
44
7.8%
87
15.4%
Wales
Parallel
120
2795
57.8%
151
5.4%
2470
88.4%
197
7.0%
158
5.7%
16
0.6%
Serial/Extended
17
2039
42.2%
153
7.5%
1744
85.5%
155
7.6%
130
6.4%
12
0.6%
Total
137
4834
100.0%
304
6.3%
4214
87.2%
352
7.3%
288
6.0%
28
0.6%
GB
Parallel
183
11696
85.2%
392
3.4%
10302
88.1%
873
7.5%
740
6.3%
262
2.2%
Serial/Extended
17
2039
14.8%
153
7.5%
1744
85.5%
155
7.6%
130
6.4%
12
0.6%
Total
200
13735
100.0%
545
4.0%
12046
87.7%
1028
7.5%
870
6.3%
274
2.0%
57.00
137.00
6.00
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is possible for the laboratory
to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative result will be reported. Therefore, the total number
of samples = the sum of positive, negative, resample and reject samples only.

Table 3b. Summary of IFN Gamma results by country and protocol (Total 2022)
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
1092 153633
99.8%
5530
3.6% 137359
89.4%
12081
7.9%
9778
6.4%
966
0.6%
Serial/Extended
9
253
0.2%
20
7.9%
212
83.8%
20
7.9%
17
6.7%
4
1.6%
Total
1101 153886
100.0%
5550
3.6% 137571
89.4%
12101
7.9%
9795
6.4%
970
0.6%
Scotland
Parallel
34
4424
99.9%
126
2.8%
3902
88.2%
375
8.5%
304
6.9%
92
2.1%
Serial/Extended
2
5
0.1%
0
0.0 %
5 100.0%
0
0.0 %
0
0.0 %
0
0.0 %
Total
36
4429
100.0%
126
2.8%
3907
88.2%
375
8.5%
304
6.9%
92
2.1%
Wales
Parallel
1443
36747
65.8%
1945
5.3%
32172
87.6%
3122
8.5%
2437
6.6%
194
0.5%
Serial/Extended
189
19099
34.2%
1253
6.6%
16615
87.0%
1453
7.6%
1143
6.0%
89
0.5%
Total
1632
55846
100.0%
3198
5.7%
48787
87.4%
4575
8.2%
3580
6.4%
283
0.5%
GB
Parallel
xx-xxxx-xxxx
91.0%
7601
3.9% 173433
89.0%
15578
8.0%
12519
6.4%
1252
0.6%
Serial/Extended
200
19357
9.0%
1273
6.6%
xx-xxxx-xxxx
87.0%
1473
7.6%
1160
6.0%
93
0.5%
Total
xx-xxxx-xxxx
100.0%
8874
4.1% 190265
88.8%
17051
8.0%
13679
6.4%
1345
0.6%
#######
#######
36.00
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is possible for the laboratory
to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative result will be reported. Therefore, the total number
of samples = the sum of positive, negative, resample and reject samples only.

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Extended Flexible IFN-GAMMA test
17
2039
14.8%
153
7.5%
1744
85.5%
155
7.6 %
130
6.4 %
12
0.6 %
Parallel - Herd or Group Slaughter
1
2
0.0%
1
50.0%
1
50.0%
0
0
0
Parallel - IRs in Exit Strategy for persistent her
11
22
0.2%
4
18.2%
13
59.1%
5
22.7 %
5
22.7 %
0
Parallel New Infection
33
2116
15.4%
36
1.7%
1831
86.5%
186
8.8 %
152
7.2 %
97
4.6 %
Parallel - Other
6
460
3.3%
47
10.2%
387
84.1%
36
7.8 %
26
5.7 %
0
Parallel Persistent Infection
12
1085
7.9%
33
3.0%
1002
92.4%
59
5.4 %
44
4.1 %
6
0.6 %
Parallel - persistent infection cull area
1
376
2.7%
3
0.8%
337
89.6%
38
10.1 %
36
9.6 %
0
Parallel – post-mvt test coupled with IDEXX an
11
31
0.2%
3
9.7%
26
83.9%
1
3.2 %
1
3.2 %
1
3.2 %
Parallel - Rapid Testing Two-times IRs
28
56
0.4%
12
21.4%
43
76.8%
2
3.6 %
1
1.8 %
0
Parallel - Recurrent breakdowns
46
7274
53.0%
177
2.4%
6484
89.1%
522
7.2 %
455
6.3 %
158
2.2 %
Parallel - severe IRs - in persistent herds
34
274
2.0%
76
27.7%
178
65.0%
24
8.8 %
20
7.3 %
0
Total
200
13735
100.0%
545
4.0%
12046
87.7%
1028
7.5 %
870
6.3 %
274
2.0 %
Table 4a. Summaryof IFN Gamma results by submission reason (December 2022)
England - HRA
Parallel Persistent Infection
2
26
0.2%
1
3.8%
23
88.5%
2
7.7 %
2
7.7 %
0
Parallel - Recurrent breakdowns
34
5378
39.2%
130
2.4%
4769
88.7%
371
6.9 %
324
6.0 %
155
2.9 %
England - HRA
36
5404
39.3%
131
2.4%
4792
88.7%
373
6.9 %
326
6.0 %
155
2.9 %
England - Edge
Parallel New Infection
8
353
2.6%
16
4.5%
301
85.3%
45
12.7 %
36
10.2 %
0
Parallel - Other
1
344
2.5%
42
12.2%
281
81.7%
28
8.1 %
21
6.1 %
0
Parallel - persistent infection cull area
1
376
2.7%
3
0.8%
337
89.6%
38
10.1 %
36
9.6 %
0
Parallel - Recurrent breakdowns
9
1663
12.1%
43
2.6%
1505
90.5%
132
7.9 %
113
6.8 %
2
0.1 %
England - Edge
19
2736
19.9%
104
3.8%
2424
88.6%
243
8.9 %
206
7.5 %
2
0.1 %
England - LRA
Parallel New Infection
2
197
1.4%
1
0.5%
188
95.4%
7
3.6 %
6
3.0 %
2
1.0 %
England - LRA
2
197
1.4%
1
0.5%
188
95.4%
7
3.6 %
6
3.0 %
2
1.0 %
Wales - High TB
Extended Flexible IFN-GAMMA test
12
1413
10.3%
88
6.2%
1234
87.3%
96
6.8 %
81
5.7 %
10
0.7 %
Parallel - IRs in Exit Strategy for persistent her
9
18
0.1%
4
22.2%
11
61.1%
3
16.7 %
3
16.7 %
0
Parallel - Other
4
70
0.5%
1
1.4%
65
92.9%
6
8.6 %
4
5.7 %
0
Parallel Persistent Infection
6
78
0.6%
8
10.3%
66
84.6%
3
3.8 %
2
2.6 %
2
2.6 %
Parallel - Rapid Testing Two-times IRs
20
45
0.3%
11
24.4%
33
73.3%
2
4.4 %
1
2.2 %
0
Parallel - Recurrent breakdowns
2
19
0.1%
0
0.0 %
17
89.5%
2
10.5 %
1
5.3 %
1
5.3 %
Parallel - severe IRs - in persistent herds
28
228
1.7%
66
28.9%
146
64.0%
20
8.8 %
16
7.0 %
0
Wales - High TB
81
1871
13.6%
178
9.5%
1572
84.0%
132
7.1 %
108
5.8 %
13
0.7 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
3
220
1.6%
26
11.8%
168
76.4%
32
14.5 %
25
11.4 %
1
0.5 %
Parallel - Herd or Group Slaughter
1
2
0.0%
1
50.0%
1
50.0%
0
0
0
Parallel - IRs in Exit Strategy for persistent her
1
2
0.0%
0
0.0 %
1
50.0%
1
50.0 %
1
50.0 %
0
Parallel New Infection
9
113
0.8%
2
1.8%
92
81.4%
20
17.7 %
19
16.8 %
0
Parallel - Other
1
46
0.3%
4
8.7%
41
89.1%
2
4.3 %
1
2.2 %
0
Parallel Persistent Infection
3
967
7.0%
24
2.5%
903
93.4%
50
5.2 %
36
3.7 %
4
0.4 %
Parallel – post-mvt test coupled with IDEXX an
4
13
0.1%
2
15.4%
9
69.2%
1
7.7 %
1
7.7 %
1
7.7 %
Parallel - Rapid Testing Two-times IRs
6
8
0.1%
1
12.5%
7
87.5%
0
0
0
Parallel - Recurrent breakdowns
1
214
1.6%
4
1.9%
193
90.2%
17
7.9 %
17
7.9 %
0
Parallel - severe IRs - in persistent herds
3
37
0.3%
10
27.0%
23
62.2%
4
10.8 %
4
10.8 %
0
Wales - Intermediate TB
32
1622
11.8%
74
4.6%
1438
88.7%
127
7.8 %
104
6.4 %
6
0.4 %
Wales - Low TB
Extended Flexible IFN-GAMMA test
2
406
3.0%
39
9.6%
342
84.2%
27
6.7 %
24
5.9 %
1
0.2 %
Parallel - IRs in Exit Strategy for persistent her
1
2
0.0%
0
0.0 %
1
50.0%
1
50.0 %
1
50.0 %
0
Parallel New Infection
8
889
6.5%
12
1.3%
822
92.5%
61
6.9 %
47
5.3 %
8
0.9 %
Parallel Persistent Infection
1
14
0.1%
0
0.0 %
10
71.4%
4
28.6 %
4
28.6 %
0
Parallel – post-mvt test coupled with IDEXX an
7
18
0.1%
1
5.6%
17
94.4%
0
0
0
Parallel - Rapid Testing Two-times IRs
2
3
0.0%
0
0.0 %
3
100.0%
0
0
0
Parallel - severe IRs - in persistent herds
3
9
0.1%
0
0.0 %
9
100.0%
0
0
0
Wales - Low TB
24
1341
9.8%
52
3.9%
1204
89.8%
93
6.9 %
76
5.7 %
9
0.7 %
Scotland - Scotland
Parallel New Infection
6
564
4.1%
5
0.9%
428
75.9%
53
9.4 %
44
7.8 %
87
15.4 %
Scotland - Scotland
6
564
4.1%
5
0.9%
428
75.9%
53
9.4 %
44
7.8 %
87
15.4 %

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Extended Flexible IFN-GAMMA test
197
19351
9.0%
1273
6.6%
xx-xxxx-xxxx
87.0%
1473
7.6 %
1160
6.0 %
93
0.5 %
Parallel – chronic breakdown
21
2862
1.3%
91
3.2%
2591
90.5%
215
7.5 %
180
6.3 %
0
Parallel - Herd or Group Slaughter
12
490
0.2%
75
15.3%
379
77.3%
56
11.4 %
36
7.3 %
0
Parallel - IRs in Exit Strategy for persistent herds
114
397
0.2%
111
28.0%
264
66.5%
26
6.5 %
21
5.3 %
1
0.3 %
Parallel New Infection
487
45053
21.0%
1239
2.8%
40268
89.4%
3946
8.8 %
3157
7.0 %
389
0.9 %
Parallel - new infection cull area
63
8108
3.8%
374
4.6%
7153
88.2%
663
8.2 %
564
7.0 %
17
0.2 %
Parallel - Other
102
3869
1.8%
270
7.0%
3311
85.6%
355
9.2 %
280
7.2 %
8
0.2 %
Parallel Persistent Infection
159
18778
8.8%
721
3.8%
16560
88.2%
1531
8.2 %
1221
6.5 %
276
1.5 %
Parallel - persistent infection cull area
41
9119
4.3%
292
3.2%
8284
90.8%
655
7.2 %
518
5.7 %
25
0.3 %
Parallel – post-mvt test coupled with IDEXX anti
147
435
0.2%
32
7.4%
383
88.0%
26
6.0 %
17
3.9 %
3
0.7 %
Parallel - Rapid Testing Two-times IRs
341
856
0.4%
202
23.6%
595
69.5%
65
7.6 %
49
5.7 %
10
1.2 %
Parallel - Recurrent breakdowns
737 102568
47.9%
3666
3.6%
92049
89.7%
7893
7.7 %
6359
6.2 %
495
0.5 %
Parallel - severe IRs - in persistent herds
345
2269
1.1%
528
23.3%
1596
70.3%
147
6.5 %
117
5.2 %
28
1.2 %
Serial - Other
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Serial - Suspected NSR Herd
2
4
0.0%
0
0.0 %
4
100.0%
0
0
0
Total
xx-xxxx-xxxx
100.0%
8874
4.1%
190265
88.8%
17051
8.0 %
13679
6.4 %
1345
0.6 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2022)
England - HRA
Extended Flexible IFN-GAMMA test
8
252
0.1%
20
7.9%
211
83.7%
20
7.9 %
17
6.7 %
4
1.6 %
Parallel – chronic breakdown
20
2621
1.2%
86
3.3%
2368
90.3%
200
7.6 %
167
6.4 %
0
Parallel - Herd or Group Slaughter
4
357
0.2%
63
17.6%
273
76.5%
40
11.2 %
21
5.9 %
0
Parallel New Infection
4
389
0.2%
25
6.4%
329
84.6%
48
12.3 %
35
9.0 %
0
Parallel - new infection cull area
50
5866
2.7%
315
5.4%
5104
87.0%
496
8.5 %
433
7.4 %
14
0.2 %
Parallel - Other
31
1782
0.8%
102
5.7%
1571
88.2%
136
7.6 %
108
6.1 %
1
0.1 %
Parallel Persistent Infection
67
10562
4.9%
423
4.0%
9170
86.8%
890
8.4 %
741
7.0 %
228
2.2 %
Parallel - persistent infection cull area
32
7245
3.4%
276
3.8%
6551
90.4%
500
6.9 %
394
5.4 %
24
0.3 %
Parallel - Recurrent breakdowns
592
87078
40.7%
3228
3.7%
77955
89.5%
6771
7.8 %
5433
6.2 %
462
0.5 %
England - Edge
Parallel – chronic breakdown
1
241
0.1%
5
2.1%
223
92.5%
15
6.2 %
13
5.4 %
0
Parallel New Infection
126
13729
6.4%
464
3.4%
12217
89.0%
1183
8.6 %
981
7.1 %
67
0.5 %

Table 4b. Summary of IFN Gamma results by submission reason (Total 2022) Cont.
Parallel - new infection cull area
12
2089
1.0%
58
2.8%
1923
92.1%
135
6.5 %
107
5.1 %
1
0.0 %
Parallel - Other
5
609
0.3%
68
11.2%
501
82.3%
50
8.2 %
39
6.4 %
1
0.2 %
Parallel Persistent Infection
10
2501
1.2%
72
2.9%
2302
92.0%
177
7.1 %
124
5.0 %
3
0.1 %
Parallel - persistent infection cull area
9
1874
0.9%
16
0.9%
1733
92.5%
155
8.3 %
124
6.6 %
1
0.1 %
Parallel - Recurrent breakdowns
53
9605
4.5%
200
2.1%
8830
91.9%
663
6.9 %
564
5.9 %
11
0.1 %
England - LRA
Parallel New Infection
75
6932
3.2%
128
1.8%
6183
89.2%
590
8.5 %
470
6.8 %
151
2.2 %
Parallel - new infection cull area
1
153
0.1%
1
0.7%
126
82.4%
32
20.9 %
24
15.7 %
2
1.3 %
Serial - Suspected NSR Herd
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
England
1101 153886
71.9%
5550
3.6%
137571
89.4%
12101
7.9 %
9795
6.4 %
970
0.6 %
Wales - High TB
Extended Flexible IFN-GAMMA test
157
16010
7.5%
1034
6.5%
13950
87.1%
1212
7.6 %
958
6.0 %
69
0.4 %
Parallel - Herd or Group Slaughter
1
2
0.0%
1
50.0%
1
50.0%
0
0
0
Parallel - IRs in Exit Strategy for persistent herd
91
328
0.2%
103
31.4%
210
64.0%
19
5.8 %
14
4.3 %
1
0.3 %
Parallel New Infection
1
13
0.0%
0
0.0 %
8
61.5%
7
53.8 %
5
38.5 %
0
Parallel - Other
42
890
0.4%
72
8.1%
750
84.3%
77
8.7 %
65
7.3 %
3
0.3 %
Parallel Persistent Infection
56
3515
1.6%
148
4.2%
3083
87.7%
324
9.2 %
245
7.0 %
39
1.1 %
Parallel – post-mvt test coupled with IDEXX ant
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Parallel - Rapid Testing Two-times IRs
272
709
0.3%
165
23.3%
488
68.8%
56
7.9 %
46
6.5 %
10
1.4 %
Parallel - Recurrent breakdowns
79
4926
2.3%
197
4.0%
4452
90.4%
351
7.1 %
262
5.3 %
16
0.3 %
Parallel - severe IRs - in persistent herds
291
1955
0.9%
483
24.7%
1347
68.9%
131
6.7 %
103
5.3 %
22
1.1 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
26
2172
1.0%
135
6.2%
1895
87.2%
170
7.8 %
123
5.7 %
19
0.9 %
Parallel - Herd or Group Slaughter
4
90
0.0%
7
7.8%
76
84.4%
8
8.9 %
7
7.8 %
0
Parallel - IRs in Exit Strategy for persistent herd
17
54
0.0%
7
13.0%
41
75.9%
6
11.1 %
6
11.1 %
0
Parallel New Infection
130
11646
5.4%
309
2.7%
10504
90.2%
1024
8.8 %
789
6.8 %
44
0.4 %
Parallel - Other
15
423
0.2%
19
4.5%
351
83.0%
67
15.8 %
51
12.1 %
2
0.5 %
Parallel Persistent Infection
21
2001
0.9%
64
3.2%
1841
92.0%
110
5.5 %
90
4.5 %
6
0.3 %
Parallel – post-mvt test coupled with IDEXX ant
56
210
0.1%
18
8.6%
181
86.2%
13
6.2 %
9
4.3 %
2
1.0 %
Parallel - Rapid Testing Two-times IRs
58
126
0.1%
33
26.2%
91
72.2%
7
5.6 %
2
1.6 %
0
Parallel - Recurrent breakdowns
12
958
0.4%
40
4.2%
812
84.8%
108
11.3 %
100
10.4 %
6
0.6 %
Parallel - severe IRs - in persistent herds
47
288
0.1%
44
15.3%
226
78.5%
14
4.9 %
12
4.2 %
6
2.1 %
Wales - Low TB
Extended Flexible IFN-GAMMA test
6
917
0.4%
84
9.2%
770
84.0%
71
7.7 %
62
6.8 %
1
0.1 %
Parallel - Herd or Group Slaughter
3
41
0.0%
4
9.8%
29
70.7%
8
19.5 %
8
19.5 %
0
Parallel - IRs in Exit Strategy for persistent herd
6
15
0.0%
1
6.7%
13
86.7%
1
6.7 %
1
6.7 %
0
Parallel New Infection
117
7920
3.7%
187
2.4%
7125
90.0%
719
9.1 %
573
7.2 %
35
0.4 %

Table 4b. Summary of IFN Gamma results by submission reason (Total 2022) Cont.
Parallel - Other
9
165
0.1%
9
5.5%
138
83.6%
25
15.2 %
17
10.3 %
1
0.6 %
Parallel Persistent Infection
5
199
0.1%
14
7.0%
164
82.4%
30
15.1 %
21
10.6 %
0
Parallel – post-mvt test coupled with IDEXX ant
90
223
0.1%
14
6.3%
200
89.7%
13
5.8 %
8
3.6 %
1
0.4 %
Parallel - Rapid Testing Two-times IRs
11
21
0.0%
4
19.0%
16
76.2%
2
9.5 %
1
4.8 %
0
Parallel - Recurrent breakdowns
1
1
0.0%
1
100.0%
0
0.0 %
0
0
0
Parallel - severe IRs - in persistent herds
6
25
0.0%
1
4.0%
22
88.0%
2
8.0 %
2
8.0 %
0
Wales - UNKNOWN
Parallel - severe IRs - in persistent herds
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Wales
1632
55846
26.1%
3198
5.7%
48787
87.4%
4575
8.2 %
3580
6.4 %
283
0.5 %
Scotland - Scotland
Parallel New Infection
34
4424
2.1%
126
2.8%
3902
88.2%
375
8.5 %
304
6.9 %
92
2.1 %
Serial - Other
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Serial - Suspected NSR Herd
1
3
0.0%
0
0.0 %
3
100.0%
0
0
0
Scotland
36
4429
2.1%
126
2.8%
3907
88.2%
375
8.5 %
304
6.9 %
92
2.1 %

Year
Month
Herds
sampled
Samples
tested
Herds
with
positives
IFNg+
samples
Wrong
Eartags
No PM
No
Cult
No PM
Cult
Pend
No PM
Cult
Neg
No PM
Cult
Mb
No
PM
Cult
Other
VL No
Cult
VL
Cult
Neg
VL
Cult
Pend
VL
Cult
Mb
VL
Cult
Other
NVL
No
Cult
NVL
Cult
Pend
NVL
Cult
Neg
NVL
Cult
Mb
NVL
Cult
Other
2022 January
262
18563
129
852
19
0
0
0
0
32
1
0
17
0
745
1
36
0
0
February
229
18198
132
966
1
19
0
0
0
0
84
3
0
3
0
765
0
91
0
0
March
268
23046
165
1108
35
0
0
0
0
60
4
0
14
0
929
0
65
1
0
April
220
15067
130
687
9
0
0
0
0
50
2
0
11
0
563
0
52
0
0
May
269
23949
158
918
2
19
0
0
0
0
62
3
0
9
0
778
0
44
1
0
June
213
17755
114
590
19
0
0
0
0
48
1
0
2
0
460
1
57
2
0
July
248
15402
109
485
4
0
0
0
0
46
1
2
3
0
382
1
46
0
0
August
274
19758
144
758
12
0
0
0
0
36
3
0
14
0
642
0
47
1
2
September
205
xx-xxxx-xxxx
107
672
13
0
0
0
0
100
0
1
7
0
519
1
30
0
0
October
180
xx-xxxx-xxxx
100
620
12
0
0
0
0
66
0
3
18
0
495
1
23
0
2
November
201
15848
120
673
17
0
0
0
0
60
0
1
3
11
503
21
0
0
57
December
200
13735
109
545
54
248
0
0
0
0
22
0
2
0
3
152
8
0
0
12
Totals (last
12 months)
2769
214161
1517
8874
57
426
0
0
0
0
666
18
9
101
14
6933
34
491
5
73
Table 5a. Summary of PM and culture results for IFNg positive animals.
Please note: “Wrong Eartags” – this column represents those samples in the laboratory information management system (LIMS) for which there is not a matching ear tag in the Cattle TB
Data dataset (SAM) at the time of monthly report trawling. Most resolve in subsequent monthly reports as the field data is added to SAM.

Country
Herds
sampled
Samples
tested
Herds
with
positives
IFNg+
samples
No PM
No
Cult
No PM
Cult
Pend
No PM
Cult
Neg
No PM
Cult
Mb
No
PM
Cult
Other
VL No
Cult
VL
Cult
Neg
VL
Cult
Pend
VL
Cult
Mb
VL
Cult
Other
NVL
No
Cult
NVL
Cult
Pend
NVL
Cult
Neg
NVL
Cult
Mb
NVL
Cult
Other
England
1101
153886
744
5550
283
0
0
0
0
621
5
4
28
1
4592
9
5
0
0
Scotland
36
4429
23
126
3
0
0
0
0
16
1
1
1
3
95
1
1
0
4
Wales
1632
55846
750
3198
140
0
0
0
0
29
12
4
72
10
2246
24
485
5
69
Totals
2769
214161
1517
8874
426
0
0
0
0
666
18
9
101
14
6933
34
491
5
73
Table 5b. Summary of culture results for IFNg positive animals (Samples received in last 12 months)

Figure 4a. Number of herds sampled for IFNg and numbers of herds with any
positive IFNg results.
142
233
117
235
163
256
156
211
143
214
147
208
134
164
145
167
144
130
136
140
134
195
100
138
133
129
97
132
103
165
90
130
111
158
99
114
139
109
130
144
98
107
80
100
81
120
91
109
0
50
100
150
200
250
300
350
400
450
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2021
2022
IFNg Positive herds
IFNg Negative herds
25840
1653
26496
1637
33735
1867
26079
1571
25277
1561
26185
1314
23382
1077
16764
912
14734
889
18674
814
24089
1349
12181
759
17250
852
xx-xxxx-xxxx
966
21357
1108
14149
687
22824
918
17067
590
14705
485
18751
758
15643
672
15663
620
15019
673
12991
545
0
5000
10000
15000
20000
25000
30000
35000
40000
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2021
2022
IFNg positive animals
IFNg non positive animals*
Figure 4b. Number of animals sampled for IFNg and numbers of animals with
positive IFNg results.
*Includes all animals with IFNg test negative, resample and reject outcomes

0
1
2
3
4
5
6
7
8
9
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2021
2022
%Rejected
%Resampled
% NEG Fail
% POS Fail
% of total
submitted
Figure 5. Rates of resamples including the fail rates broken down for positive
(POS) and negative (NEG) controls.

0
5
10
15
20
25
30
35
40
45
W Sussex
Wigtown
Staffs
Shropshire
Pembs
NW Wales
NE Wales
Leics & Rut
Gwynedd
Gloucs
Devon
Cumbria
Cheshire
Carms
Ayrshire
Argyll & Bute
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during December 2022 (% submission per
County)
County
%Resampled %Retested
Argyll & Bute
8.37 %
9.95 %
Avon
2.79 %
3.28 %
Ayrshire
12.82 %
15.38 %
Berks
4.44 %
4.44 %
Carms
5.41 %
8.11 %
Ceredigion
5.69 %
6.94 %
Cheshire
9.71 %
10.24 %
Corn & Scilly
9.14 %
9.64 %
Cumbria
2.60 %
3.13 %
Derbyshire
10.56 %
12.11 %
Devon
6.61 %
7.02 %
Dorset
5.26 %
Gloucs
7.61 %
9.17 %
Gwent
2.63 %
Gwynedd
4.90 %
6.40 %
Heref
8.29 %
9.46 %
Leics & Rut
9.09 %
10.23 %
Mid Glamorgan
NE Wales
5.96 %
7.47 %
Notts
3.57 %
3.57 %
NW Wales
Oxon
5.77 %
7.47 %
Pembs
6.53 %
7.60 %
Powys
7.07 %
7.84 %
Shropshire
5.33 %
6.10 %
Somerset excl
19.35 %
22.58 %
Staffs
4.91 %
6.60 %
Warks
5.41 %
6.80 %
Wigtown
2.41 %
3.61 %
Wiltshire
5.43 %
5.95 %
W Sussex
20.00 %
20.00 %

Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
8225
236
2.9%
8337
236
2.8%
Wales
4783
304
6.4%
4834
304
6.3%
Scotland
528
5
0.9%
564
5
0.9%
GB
13536
545
4.0%
13735
545
4.0%
Table 6a (i): Number of animals and submissions tested in December 2022
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
143809
5550
3.9%
153886
5550
3.6%
Wales
51519
3198
6.2%
55846
3198
5.7%
Scotland
4190
126
3.0%
4429
126
2.8%
GB
199516
8874
4.4%
214161
8874
4.1%
Table 6b (i): Number of animals and submissions tested in 2022 Up to end of December
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
10307
527
5.1%
10441
527
5.0%
Wales
2633
232
8.8%
2676
232
8.7%
GB
12940
759
5.9%
13117
759
5.8%
Table 6a (ii): Number of animals and submissions tested in December 2021
Table 6b (ii): Number of animals and submissions tested in 2021 Up to end of December
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
210457
11335
5.4%
227569
11338
5.0%
Wales
59047
3918
6.6%
63779
3919
6.1%
Scotland
1386
150
10.8%
2023
150
7.4%
GB
270879
15403
5.7%
293371
15407
5.3%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
Shropshire
PRV-SP
2
2
0
0
Surrey
PRV-SE
2
88
0
0
Total
4
90
0
*SER-IOM: Serial High Specificity test – Isle of Man; PRV-SE: Private High Sensitivity test - England;
PRV-SP: Private High Specificity test – England
Table 7a Number of private samples December 2022
Table 7b Number of private samples 2022
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
Devon
PRV-SE
4
109
5
4.59 %
PRV-SP
1
2
0
0
Dorset
PRV-SP
2
3
0
0
East Sussex
PRV-SP
1
3
0
0
Gloucestershire
PRV-SP
2
4
0
0
Hampshire
PRV-SE
1
7
2
28.57 %
Herefordshire
PRV-SP
1
1
0
0
Leicestershire and Rutland
PRV-SP
7
7
0
0
Shropshire
PRV-SP
2
2
0
0
Somerset excl North
PRV-SE
1
5
0
0
PRV-SP
3
17
1
5.88 %
Surrey
PRV-SE
2
88
0
0
Wiltshire
PRV-SE
4
67
9
13.43 %
Total
31
315
17
5.40 %

Country
County
Test Reason
Num
Submissions
Num Samples
Tested
Num Positive
Samples
% Positive
Wales
Carmarthenshire
BOV-IR-C
4
29
5
17.2%
BOV-OTHER
1
22
0
0
Ceredigion
BOV-OTHER
2
70
11
15.7%
North East Wales
BOV-IR-C
8
55
7
12.7%
BOV-P
1
66
16
24.2%
BOV-POSTM
6
17
6
35.3%
Pembrokeshire
BOV-IR-C
20
228
36
15.8%
BOV-IR-EX
2
3
1
33.3%
BOV-OTHER
1
32
0
0
Powys
BOV-IR-C
4
30
1
3.3%
South Wales
BOV-IR-C
2
33
7
21.2%
Wales
51
585
90
15.4%
All GB
51
585
90
15.4 %
Table 8a Number of Cattle Antibody Tests December 2022
Table 8b Number of Cattle Antibody Tests 2022
Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
Wales
Carmarthenshire
BOV-IR-C
39
380
97
25.5%
BOV-IR-EX
5
30
4
13.3%
BOV-OTHER
6
728
14
1.9%
BOV-P
2
105
2
1.9%
OTHER
1
82
1
1.2%
Ceredigion
BOV-IR-C
28
254
40
15.7%
BOV-IR-EX
5
17
3
17.6%
BOV-OTHER
4
181
15
8.3%
BOV-P
2
62
6
9.7%
BOV-POSTM
1
13
4
30.8%
North East Wales
BOV-IR-C
48
377
40
10.6%
BOV-IR-EX
2
14
4
28.6%
BOV-OTHER
5
209
0
0
BOV-P
6
933
77
8.3%
BOV-POSTM
80
207
42
20.3%
North West Wales
BOV-POSTM
5
5
1
20.0%
Pembrokeshire
BOV-IR-C
161
1,468
283
19.3%
BOV-IR-EX
27
162
47
29.0%
BOV-OTHER
19
1,920
89
4.6%
BOV-P
11
820
39
4.8%
OTHER
1
30
0
0
Powys
BOV-IR-C
27
206
27
13.1%
BOV-IR-EX
5
22
6
27.3%
BOV-P
4
206
5
2.4%
BOV-POSTM
2
2
0
0
Shropshire
BOV-IR-C
1
1
0
0
South Wales
BOV-IR-C
21
192
35
18.2%
BOV-OTHER
3
143
8
5.6%

Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
BOV-P
1
282
16
5.7%
Wales
522
9,051
905
10.0%
All GB
522
9,051
905
10.0 %