Monthly report: Surveillance Project SB4008 IFNg Tests for Bovine Tuberculosis - September 2023
Source: environment.data.gov.uk (2024-07-03)

Interferon-Gamma Testing for Bovine Tuberculosis - Monthly Reports from January 2023. 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.

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

Monthly Report:
Surveillance Project
SB4008 IFNg (TC0651 and
TC0751) & Antibody
(TC0077) tests for bovine
tuberculosis
Number
Report Period 1st - 30th September 2023
Issued 10 October 2023
205

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
September
2023
%
Total 2023
%
Submissions
221
2094
Samples
Total (%)
18070
100.00 %
xx-xxxx-xxxx
100.00 %
England
10115
55.98 %
106113
64.37 %
Wales
5410
29.94 %
48135
29.20 %
Scotland
2545
14.08 %
10610
6.44 %
Parallel Tests
PAR-CHR
0
0.00 %
2339
1.42 %
PAR-CUL-N
199
1.10 %
4572
2.77 %
PAR-CUL-P
220
1.22 %
759
0.46 %
PAR-HERD-S
1
0.01 %
461
0.28 %
PAR-IR-EX
42
0.23 %
457
0.28 %
PAR-IR-SEV
354
1.96 %
2148
1.30 %
PAR-NEW-IN
5223
28.90 %
51030
30.95 %
PAR-OTHER
623
3.45 %
4436
2.69 %
PAR-PERSIS
3007
16.64 %
18050
10.95 %
PAR-POSTM
0
0.00 %
94
0.06 %
PAR-RAPID
57
0.32 %
628
0.38 %
PAR-RECUR
8236
45.58 %
71049
43.10 %
Total(% of all samples)
17962
99.40 %
156023
94.64 %
Serial/Extended Tests
SER-ANOM
0
0.00 %
17
0.01 %
SER-FLEXI
108
0.60 %
8802
5.34 %
SER-FRAUD
0
0.00 %
14
0.01 %
SER-NSR
0
0.00 %
SER-OTHER
0
0.00 %
2
0.00 %
Total(% of all samples)
108
0.60 %
8835
5.36 %
Total
18070
100.00 %
xx-xxxx-xxxx
100.00 %
Retests
Total (% of all samples)
1230
6.81 %
11684
7.09 %
England
665
3.68 %
7114
4.32 %
Wales
389
2.15 %
3667
2.22 %
Scotland
176
0.97 %
903
0.55 %
Resamples
Total (% of all samples)
925
5.12 %
9302
5.64 %
England
480
2.66 %
5755
3.49 %
Wales
293
1.62 %
2754
1.67 %
Scotland
152
0.84 %
793
0.48 %
Rejects
Total (% of all samples)
83
0.46 %
1848
1.12 %
England
63
0.35 %
1283
0.78 %
Wales
19
0.11 %
488
0.30 %
Scotland
1
0.01 %
77
0.05 %
Table 1. Monthly Totals for September 2023
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-N
PAR-CUL-P
PAR-HERD-S
PAR-IR-EX
PAR-IR-SEV
PAR-NEW-IN
PAR-OTHER
PAR-PERSIS
PAR-RAPID
PAR-RECUR
SER-FLEXI
Breakdown of
Reason for
submission
PAR-CUL-N
199
1.1 %
PAR-CUL-P
220
1.2 %
PAR-HERD-S
1
0.0 %
PAR-IR-EX
42
0.2 %
PAR-IR-SEV
354
2.0 %
PAR-NEW-IN
5223
28.9 %
PAR-OTHER
623
3.4 %
PAR-PERSIS
3007
16.6 %
PAR-RAPID
57
0.3 %
PAR-RECUR
8236
45.6 %
SER-FLEXI
108
0.6 %
Total
18070
100.00 %
Figure 1. Number of samples submitted in each category during September 2023
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
Roxburgh
Kirkcudbright
Ayrshire
S Wales
S Glamorgan
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
Northumb
Humberside
Herts
Heref
Hampshire
Gr Manchester
Gloucs
E Sussex
Dorset
Devon
Cumbria
Corn & Scilly
Cheshire
Bucks
Berks
Avon
Scotland
Wales
England
SER-FLEXI
PAR-RECUR
PAR-RAPID
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-IR-SEV
PAR-IR-EX
PAR-HERD-S
PAR-CUL-P
PAR-CUL-N
Breakdown of
Samples
submitted by
County
Figure 2. Number of samples submitted in each category by County during September 2023
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
West lothian
Roxburgh
Renfrew
Perthshire
Kirkcudbright
Ayrshire
W Glamorgan
S Wales
Shropshire
S Glamorgan
Powys
Pembs
NW Wales
NE Wales
Mid Glamorgan
Gwynedd
Gwent
Conwy
Cheshire
Ceredigion
Carms
W Yorks
W Sussex
W Midlands
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
Notts
Northumb
Northants
Lincs
Leics & Rut
Lancashire
Humberside
Herts
Heref
Hampshire
Gr Manchester
Gloucs
E Sussex
Essex
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Cheshire
Bucks
Berks
Avon
Scotland
Wales
England
SER-OTHER
SER-FRAUD
SER-FLEXI
SER-ANOM
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 2023
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
2
538
2.98 %
27
5.02 %
497
92.38 %
21
3.90 %
14
2.60 %
0
0.00 %
Corn & Scilly
PAR-OTHER
1
25
0.14 %
4
16.00 %
18
72.00 %
3
12.00 %
3
12.00 %
0
0.00 %
PAR-RECUR
6
1,503
8.32 %
52
3.46 %
1392
92.61 %
80
5.32 %
59
3.93 %
0
0.00 %
Devon
PAR-CUL-N
1
58
0.32 %
5
8.62 %
52
89.66 %
1
1.72 %
1
1.72 %
0
0.00 %
PAR-OTHER
5
499
2.76 %
15
3.01 %
458
91.78 %
43
8.62 %
25
5.01 %
1
0.20 %
PAR-RECUR
11
829
4.59 %
27
3.26 %
752
90.71 %
82
9.89 %
48
5.79 %
2
0.24 %
Dorset
PAR-RECUR
1
173
0.96 %
4
2.31 %
160
92.49 %
10
5.78 %
9
5.20 %
0
0.00 %
Gloucs
PAR-RECUR
4
1,092
6.04 %
73
6.68 %
991
90.75 %
38
3.48 %
28
2.56 %
0
0.00 %
Heref
PAR-RECUR
8
525
2.91 %
18
3.43 %
498
94.86 %
17
3.24 %
9
1.71 %
0
0.00 %
Shropshire
PAR-CUL-P
1
220
1.22 %
4
1.82 %
202
91.82 %
22
10.00 %
14
6.36 %
0
0.00 %
PAR-PERSIS
3
23
0.13 %
1
4.35 %
15
65.22 %
10
43.48 %
7
30.43 %
0
0.00 %
PAR-RECUR
1
394
2.18 %
9
2.28 %
381
96.70 %
10
2.54 %
4
1.02 %
0
0.00 %
Somerset excl N
PAR-RECUR
5
958
5.30 %
32
3.34 %
888
92.69 %
46
4.80 %
38
3.97 %
0
0.00 %
Staffs
PAR-PERSIS
1
235
1.30 %
5
2.13 %
208
88.51 %
23
9.79 %
22
9.36 %
0
0.00 %
PAR-RECUR
1
468
2.59 %
8
1.71 %
435
92.95 %
37
7.91 %
24
5.13 %
1
0.21 %
Wiltshire
PAR-PERSIS
3
38
0.21 %
0
0.00 %
27
71.05 %
6
15.79 %
6
15.79 %
5
13.16 %
PAR-RECUR
4
297
1.64 %
8
2.69 %
283
95.29 %
10
3.37 %
6
2.02 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
1
148
0.82 %
7
4.73 %
136
91.89 %
8
5.41 %
5
3.38 %
0
0.00 %
Bucks
PAR-HERD-S
1
1
0.01 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
PAR-RECUR
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Cheshire
PAR-CUL-N
1
12
0.07 %
1
8.33 %
10
83.33 %
1
8.33 %
1
8.33 %
0
0.00 %
PAR-PERSIS
4
366
2.03 %
4
1.09 %
349
95.36 %
17
4.64 %
13
3.55 %
0
0.00 %
E Sussex
PAR-NEW-IN
7
327
1.81 %
8
2.45 %
293
89.60 %
27
8.26 %
26
7.95 %
0
0.00 %
Hampshire
PAR-NEW-IN
1
33
0.18 %
0
0.00 %
33
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Oxon
PAR-RECUR
2
297
1.64 %
13
4.38 %
267
89.90 %
18
6.06 %
15
5.05 %
2
0.67 %
Warks
PAR-RECUR
2
160
0.89 %
2
1.25 %
102
63.75 %
8
5.00 %
6
3.75 %
50
31.25 %
Table 2a. Summary by County for September 2023
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 September 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - LRA
Cumbria
PAR-OTHER
1
16
0.09 %
0
0.00 %
15
93.75 %
1
6.25 %
1
6.25 %
0
0.00 %
Gr Manchester
PAR-NEW-IN
1
220
1.22 %
4
1.82 %
192
87.27 %
28
12.73 %
24
10.91 %
0
0.00 %
Herts
PAR-NEW-IN
1
149
0.82 %
0
0.00 %
145
97.32 %
6
4.03 %
4
2.68 %
0
0.00 %
Humberside
PAR-NEW-IN
2
309
1.71 %
2
0.65 %
256
82.85 %
68
22.01 %
50
16.18 %
1
0.32 %
Northumb
PAR-NEW-IN
1
7
0.04 %
0
0.00 %
6
85.71 %
2
28.57 %
1
14.29 %
0
0.00 %
N Yorks
PAR-NEW-IN
3
173
0.96 %
4
2.31 %
155
89.60 %
17
9.83 %
13
7.51 %
1
0.58 %
Surrey
PAR-NEW-IN
1
20
0.11 %
0
0.00 %
17
85.00 %
4
20.00 %
3
15.00 %
0
0.00 %
England
88
10115
55.98 %
337
3.33 %
9235
91.30 %
665
6.57 %
480
4.75 %
63
0.62 %
Wales - High TB
Carms
PAR-IR-SEV
4
47
0.26 %
13
27.66 %
34
72.34 %
2
4.26 %
0
0.00 %
0
0.00 %
PAR-OTHER
1
83
0.46 %
0
0.00 %
71
85.54 %
15
18.07 %
12
14.46 %
0
0.00 %
PAR-PERSIS
4
293
1.62 %
2
0.68 %
275
93.86 %
20
6.83 %
15
5.12 %
1
0.34 %
PAR-RAPID
5
19
0.11 %
2
10.53 %
17
89.47 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
161
0.89 %
0
0.00 %
158
98.14 %
5
3.11 %
3
1.86 %
0
0.00 %
Ceredigion
PAR-IR-EX
1
8
0.04 %
3
37.50 %
5
62.50 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
1
6
0.03 %
2
33.33 %
4
66.67 %
1
16.67 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
6
0.03 %
1
16.67 %
5
83.33 %
0
0.00 %
0
0.00 %
0
0.00 %
Gwent
PAR-IR-SEV
3
15
0.08 %
2
13.33 %
13
86.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
185
1.02 %
7
3.78 %
167
90.27 %
18
9.73 %
11
5.95 %
0
0.00 %
PAR-RAPID
4
6
0.03 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
23
0.13 %
1
4.35 %
17
73.91 %
6
26.09 %
5
21.74 %
0
0.00 %
Pembs
PAR-IR-EX
7
31
0.17 %
7
22.58 %
24
77.42 %
1
3.23 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
19
197
1.09 %
32
16.24 %
150
76.14 %
16
8.12 %
14
7.11 %
1
0.51 %
PAR-PERSIS
7
1,237
6.85 %
85
6.87 %
1081
87.39 %
89
7.19 %
66
5.34 %
5
0.40 %
PAR-RAPID
6
13
0.07 %
0
0.00 %
11
84.62 %
2
15.38 %
2
15.38 %
0
0.00 %
PAR-RECUR
5
794
4.39 %
15
1.89 %
754
94.96 %
36
4.53 %
25
3.15 %
0
0.00 %
SER-FLEXI
6
58
0.32 %
1
1.72 %
46
79.31 %
9
15.52 %
8
13.79 %
3
5.17 %
Powys
PAR-IR-SEV
3
33
0.18 %
8
24.24 %
23
69.70 %
2
6.06 %
2
6.06 %
0
0.00 %
PAR-RAPID
4
6
0.03 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
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 2a. Summary by County for September 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
SER-FLEXI
1
50
0.28 %
1
2.00 %
45
90.00 %
4
8.00 %
4
8.00 %
0
0.00 %
S Wales
PAR-RECUR
1
10
0.06 %
1
10.00 %
6
60.00 %
4
40.00 %
3
30.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-IR-SEV
1
10
0.06 %
6
60.00 %
4
40.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-IR-EX
1
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
0
0.00 %
PAR-RAPID
1
1
0.01 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-EX
1
1
0.01 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
5
44
0.24 %
5
11.36 %
35
79.55 %
4
9.09 %
4
9.09 %
0
0.00 %
PAR-NEW-IN
4
1,104
6.11 %
11
1.00 %
1030
93.30 %
68
6.16 %
54
4.89 %
9
0.82 %
PAR-PERSIS
1
311
1.72 %
1
0.32 %
289
92.93 %
31
9.97 %
21
6.75 %
0
0.00 %
PAR-RAPID
2
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
12
0.07 %
0
0.00 %
12
100.00 %
1
8.33 %
0
0.00 %
0
0.00 %
Powys
PAR-PERSIS
1
287
1.59 %
13
4.53 %
261
90.94 %
16
5.57 %
13
4.53 %
0
0.00 %
S Glamorgan
PAR-RAPID
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Gwynedd
PAR-NEW-IN
3
232
1.28 %
19
8.19 %
203
87.50 %
13
5.60 %
10
4.31 %
0
0.00 %
PAR-PERSIS
1
32
0.18 %
0
0.00 %
31
96.88 %
3
9.38 %
1
3.13 %
0
0.00 %
NE Wales
PAR-IR-SEV
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
2
85
0.47 %
3
3.53 %
63
74.12 %
21
24.71 %
19
22.35 %
0
0.00 %
Wales
115
5410
29.94 %
242
4.47 %
4856
89.76 %
389
7.19 %
293
5.42 %
19
0.35 %
Scotland - Scotland
Ayrshire
PAR-NEW-IN
4
348
1.93 %
2
0.57 %
309
88.79 %
45
12.93 %
37
10.63 %
0
0.00 %
Kirkcudbright
PAR-NEW-IN
5
907
5.02 %
36
3.97 %
837
92.28 %
41
4.52 %
34
3.75 %
0
0.00 %
Roxburgh
PAR-CUL-N
1
129
0.71 %
6
4.65 %
119
92.25 %
5
3.88 %
4
3.10 %
0
0.00 %
PAR-NEW-IN
1
217
1.20 %
1
0.46 %
213
98.16 %
2
0.92 %
2
0.92 %
1
0.46 %
Wigtown
PAR-NEW-IN
7
944
5.22 %
14
1.48 %
855
90.57 %
83
8.79 %
75
7.94 %
0
0.00 %
Scotland
18
2545
14.08 %
59
2.32 %
2333
91.67 %
176
6.92 %
152
5.97 %
1
0.04 %
Grand Total
Sum:
221
18070
638
xx-xxxx-xxxx
1230
925
83
*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
PAR-RECUR
1
51
0.03 %
1
1.96 %
49
96.08 %
2
3.92 %
1
1.96 %
0
0.00 %
Avon
PAR-RECUR
25
3,020
1.83 %
115
3.81 %
2788
92.32 %
136
4.50 %
111
3.68 %
6
0.20 %
Corn & Scilly
PAR-CUL-N
3
926
0.56 %
60
6.48 %
804
86.83 %
80
8.64 %
62
6.70 %
0
0.00 %
PAR-CUL-P
1
539
0.33 %
31
5.75 %
481
89.24 %
32
5.94 %
26
4.82 %
1
0.19 %
PAR-HERD-S
1
61
0.04 %
1
1.64 %
59
96.72 %
4
6.56 %
1
1.64 %
0
0.00 %
PAR-OTHER
4
349
0.21 %
28
8.02 %
289
82.81 %
36
10.32 %
32
9.17 %
0
0.00 %
PAR-PERSIS
6
554
0.34 %
42
7.58 %
473
85.38 %
45
8.12 %
39
7.04 %
0
0.00 %
PAR-RECUR
61
11,542
7.00 %
437
3.79 %
10338
89.57 %
908
7.87 %
764
6.62 %
3
0.03 %
Devon
PAR-CHR
2
408
0.25 %
11
2.70 %
373
91.42 %
39
9.56 %
24
5.88 %
0
0.00 %
PAR-CUL-N
17
2,274
1.38 %
102
4.49 %
2053
90.28 %
129
5.67 %
106
4.66 %
13
0.57 %
PAR-HERD-S
2
396
0.24 %
35
8.84 %
326
82.32 %
48
12.12 %
35
8.84 %
0
0.00 %
PAR-OTHER
10
1,197
0.73 %
58
4.85 %
1092
91.23 %
72
6.02 %
46
3.84 %
1
0.08 %
PAR-PERSIS
5
1,100
0.67 %
40
3.64 %
1030
93.64 %
42
3.82 %
30
2.73 %
0
0.00 %
PAR-RECUR
81
13,047
7.91 %
627
4.81 %
11490
88.07 %
872
6.68 %
659
5.05 %
271
2.08 %
Dorset
PAR-OTHER
4
667
0.40 %
56
8.40 %
592
88.76 %
16
2.40 %
13
1.95 %
6
0.90 %
PAR-RECUR
12
2,295
1.39 %
149
6.49 %
1716
74.77 %
86
3.75 %
68
2.96 %
362
15.77 %
Gloucs
PAR-CUL-N
2
35
0.02 %
5
14.29 %
30
85.71 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
14
1,988
1.21 %
118
5.94 %
1800
90.54 %
87
4.38 %
70
3.52 %
0
0.00 %
Heref
PAR-OTHER
2
83
0.05 %
3
3.61 %
74
89.16 %
6
7.23 %
6
7.23 %
0
0.00 %
PAR-RECUR
41
6,175
3.75 %
327
5.30 %
5507
89.18 %
422
6.83 %
341
5.52 %
0
0.00 %
Shropshire
PAR-CUL-P
1
220
0.13 %
4
1.82 %
202
91.82 %
22
10.00 %
14
6.36 %
0
0.00 %
PAR-PERSIS
8
841
0.51 %
45
5.35 %
758
90.13 %
46
5.47 %
38
4.52 %
0
0.00 %
PAR-RECUR
40
4,703
2.85 %
168
3.57 %
4249
90.35 %
357
7.59 %
283
6.02 %
3
0.06 %
Somerset excl N
PAR-CHR
6
369
0.22 %
41
11.11 %
304
82.38 %
34
9.21 %
24
6.50 %
0
0.00 %
PAR-OTHER
2
12
0.01 %
2
16.67 %
9
75.00 %
2
16.67 %
1
8.33 %
0
0.00 %
PAR-PERSIS
2
296
0.18 %
47
15.88 %
226
76.35 %
25
8.45 %
23
7.77 %
0
0.00 %
Table 2b. Summary by County for 2023
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 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
41
5,959
3.61 %
285
4.78 %
5496
92.23 %
211
3.54 %
174
2.92 %
4
0.07 %
Staffs
PAR-CHR
7
1,562
0.95 %
57
3.65 %
1370
87.71 %
149
9.54 %
134
8.58 %
1
0.06 %
PAR-OTHER
1
38
0.02 %
1
2.63 %
37
97.37 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
235
0.14 %
5
2.13 %
208
88.51 %
23
9.79 %
22
9.36 %
0
0.00 %
PAR-RECUR
35
7,530
4.57 %
157
2.08 %
6841
90.85 %
612
8.13 %
505
6.71 %
27
0.36 %
Wiltshire
PAR-CUL-N
3
992
0.60 %
34
3.43 %
924
93.15 %
42
4.23 %
31
3.13 %
3
0.30 %
PAR-OTHER
2
221
0.13 %
5
2.26 %
181
81.90 %
43
19.46 %
34
15.38 %
1
0.45 %
PAR-PERSIS
7
1,297
0.79 %
24
1.85 %
1210
93.29 %
77
5.94 %
50
3.86 %
13
1.00 %
PAR-RECUR
25
3,370
2.04 %
124
3.68 %
3116
92.46 %
176
5.22 %
124
3.68 %
6
0.18 %
W Midlands
PAR-RECUR
1
144
0.09 %
0
0.00 %
137
95.14 %
17
11.81 %
7
4.86 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
5
932
0.57 %
17
1.82 %
862
92.49 %
58
6.22 %
53
5.69 %
0
0.00 %
PAR-RECUR
1
132
0.08 %
2
1.52 %
118
89.39 %
13
9.85 %
11
8.33 %
1
0.76 %
Bucks
PAR-CUL-N
1
191
0.12 %
3
1.57 %
182
95.29 %
6
3.14 %
6
3.14 %
0
0.00 %
PAR-HERD-S
1
1
0.00 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
PAR-NEW-IN
23
3,343
2.03 %
109
3.26 %
3038
90.88 %
161
4.82 %
134
4.01 %
62
1.85 %
PAR-RECUR
4
64
0.04 %
2
3.13 %
59
92.19 %
3
4.69 %
3
4.69 %
0
0.00 %
Cheshire
PAR-CUL-N
2
16
0.01 %
1
6.25 %
14
87.50 %
1
6.25 %
1
6.25 %
0
0.00 %
PAR-OTHER
4
748
0.45 %
44
5.88 %
686
91.71 %
20
2.67 %
18
2.41 %
0
0.00 %
PAR-PERSIS
13
1,889
1.15 %
37
1.96 %
1710
90.52 %
161
8.52 %
142
7.52 %
0
0.00 %
PAR-RECUR
3
417
0.25 %
4
0.96 %
397
95.20 %
21
5.04 %
16
3.84 %
0
0.00 %
Derbyshire
PAR-NEW-IN
10
684
0.41 %
38
5.56 %
603
88.16 %
53
7.75 %
43
6.29 %
0
0.00 %
PAR-RECUR
8
2,038
1.24 %
56
2.75 %
1868
91.66 %
135
6.62 %
114
5.59 %
0
0.00 %
E Sussex
PAR-NEW-IN
26
1,929
1.17 %
46
2.38 %
1770
91.76 %
136
7.05 %
113
5.86 %
0
0.00 %
Hampshire
PAR-NEW-IN
9
1,275
0.77 %
50
3.92 %
1166
91.45 %
70
5.49 %
56
4.39 %
3
0.24 %
PAR-RECUR
1
16
0.01 %
0
0.00 %
8
50.00 %
9
56.25 %
8
50.00 %
0
0.00 %
Leics & Rut
PAR-NEW-IN
17
2,119
1.29 %
58
2.74 %
1975
93.20 %
105
4.96 %
86
4.06 %
0
0.00 %
PAR-RECUR
1
135
0.08 %
11
8.15 %
120
88.89 %
7
5.19 %
4
2.96 %
0
0.00 %
Northants
PAR-NEW-IN
11
1,176
0.71 %
25
2.13 %
951
80.87 %
95
8.08 %
81
6.89 %
119
10.12 %
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 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
2
408
0.25 %
6
1.47 %
374
91.67 %
32
7.84 %
28
6.86 %
0
0.00 %
Notts
PAR-NEW-IN
9
553
0.34 %
13
2.35 %
501
90.60 %
60
10.85 %
37
6.69 %
2
0.36 %
Oxon
PAR-NEW-IN
6
429
0.26 %
8
1.86 %
398
92.77 %
28
6.53 %
23
5.36 %
0
0.00 %
PAR-PERSIS
3
976
0.59 %
39
4.00 %
895
91.70 %
57
5.84 %
42
4.30 %
0
0.00 %
PAR-RECUR
18
2,213
1.34 %
80
3.62 %
2022
91.37 %
143
6.46 %
109
4.93 %
2
0.09 %
SER-FLEXI
2
55
0.03 %
3
5.45 %
48
87.27 %
4
7.27 %
4
7.27 %
0
0.00 %
Warks
PAR-NEW-IN
7
683
0.41 %
22
3.22 %
638
93.41 %
34
4.98 %
23
3.37 %
0
0.00 %
PAR-OTHER
1
19
0.01 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
19
100.00 %
PAR-RECUR
12
312
0.19 %
7
2.24 %
218
69.87 %
27
8.65 %
23
7.37 %
64
20.51 %
England - LRA
Cumbria
PAR-NEW-IN
16
3,222
1.95 %
151
4.69 %
2860
88.76 %
239
7.42 %
210
6.52 %
1
0.03 %
PAR-OTHER
2
223
0.14 %
0
0.00 %
206
92.38 %
20
8.97 %
17
7.62 %
0
0.00 %
Essex
PAR-NEW-IN
6
405
0.25 %
7
1.73 %
216
53.33 %
7
1.73 %
5
1.23 %
177
43.70 %
Gr Manchester
PAR-NEW-IN
2
253
0.15 %
5
1.98 %
219
86.56 %
32
12.65 %
28
11.07 %
1
0.40 %
PAR-PERSIS
3
46
0.03 %
0
0.00 %
46
100.00 %
1
2.17 %
0
0.00 %
0
0.00 %
Herts
PAR-NEW-IN
1
149
0.09 %
0
0.00 %
145
97.32 %
6
4.03 %
4
2.68 %
0
0.00 %
PAR-RECUR
1
79
0.05 %
2
2.53 %
76
96.20 %
3
3.80 %
1
1.27 %
0
0.00 %
Humberside
PAR-NEW-IN
4
377
0.23 %
3
0.80 %
316
83.82 %
78
20.69 %
56
14.85 %
2
0.53 %
Lancashire
PAR-NEW-IN
3
409
0.25 %
4
0.98 %
374
91.44 %
32
7.82 %
31
7.58 %
0
0.00 %
Lincs
PAR-NEW-IN
10
1,109
0.67 %
19
1.71 %
1007
90.80 %
87
7.84 %
83
7.48 %
0
0.00 %
Northumb
PAR-NEW-IN
2
42
0.03 %
1
2.38 %
33
78.57 %
7
16.67 %
6
14.29 %
2
4.76 %
N Yorks
PAR-NEW-IN
10
946
0.57 %
8
0.85 %
895
94.61 %
46
4.86 %
36
3.81 %
7
0.74 %
Surrey
PAR-NEW-IN
7
869
0.53 %
24
2.76 %
694
79.86 %
58
6.67 %
53
6.10 %
98
11.28 %
W Sussex
PAR-NEW-IN
3
618
0.37 %
9
1.46 %
470
76.05 %
148
23.95 %
139
22.49 %
0
0.00 %
W Yorks
PAR-NEW-IN
3
117
0.07 %
0
0.00 %
106
90.60 %
12
10.26 %
9
7.69 %
2
1.71 %
England
749
106113
64.37 %
4159
3.92 %
94916
89.45 %
7114
6.70 %
5755
5.42 %
1283
1.21 %
Wales - High TB
Carms
PAR-IR-EX
10
45
0.03 %
10
22.22 %
33
73.33 %
2
4.44 %
2
4.44 %
0
0.00 %
PAR-IR-SEV
40
277
0.17 %
90
32.49 %
172
62.09 %
18
6.50 %
15
5.42 %
0
0.00 %
PAR-OTHER
6
302
0.18 %
6
1.99 %
268
88.74 %
33
10.93 %
28
9.27 %
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 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
22
1,688
1.02 %
66
3.91 %
1531
90.70 %
106
6.28 %
81
4.80 %
10
0.59 %
PAR-RAPID
52
138
0.08 %
39
28.26 %
94
68.12 %
6
4.35 %
4
2.90 %
1
0.72 %
PAR-RECUR
12
663
0.40 %
40
6.03 %
592
89.29 %
35
5.28 %
28
4.22 %
3
0.45 %
SER-ANOM
4
17
0.01 %
0
0.00 %
15
88.24 %
2
11.76 %
2
11.76 %
0
0.00 %
SER-FLEXI
15
1,170
0.71 %
71
6.07 %
1057
90.34 %
53
4.53 %
39
3.33 %
3
0.26 %
SER-FRAUD
1
14
0.01 %
0
0.00 %
13
92.86 %
1
7.14 %
1
7.14 %
0
0.00 %
Ceredigion
PAR-IR-EX
12
48
0.03 %
9
18.75 %
34
70.83 %
5
10.42 %
5
10.42 %
0
0.00 %
PAR-IR-SEV
22
143
0.09 %
22
15.38 %
114
79.72 %
10
6.99 %
7
4.90 %
0
0.00 %
PAR-OTHER
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
5
630
0.38 %
29
4.60 %
585
92.86 %
20
3.17 %
14
2.22 %
2
0.32 %
PAR-RAPID
19
40
0.02 %
9
22.50 %
28
70.00 %
2
5.00 %
2
5.00 %
1
2.50 %
PAR-RECUR
3
147
0.09 %
6
4.08 %
137
93.20 %
3
2.04 %
3
2.04 %
1
0.68 %
SER-FLEXI
9
490
0.30 %
86
17.55 %
380
77.55 %
37
7.55 %
24
4.90 %
0
0.00 %
Gwent
PAR-IR-EX
4
28
0.02 %
17
60.71 %
11
39.29 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
9
48
0.03 %
14
29.17 %
32
66.67 %
2
4.17 %
2
4.17 %
0
0.00 %
PAR-OTHER
1
6
0.00 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
185
0.11 %
7
3.78 %
167
90.27 %
18
9.73 %
11
5.95 %
0
0.00 %
PAR-RAPID
23
54
0.03 %
8
14.81 %
42
77.78 %
6
11.11 %
4
7.41 %
0
0.00 %
PAR-RECUR
9
784
0.48 %
34
4.34 %
703
89.67 %
75
9.57 %
46
5.87 %
1
0.13 %
SER-FLEXI
15
1,504
0.91 %
64
4.26 %
1375
91.42 %
77
5.12 %
56
3.72 %
9
0.60 %
Pembs
PAR-HERD-S
1
2
0.00 %
0
0.00 %
2
100.00 %
1
50.00 %
0
0.00 %
0
0.00 %
PAR-IR-EX
44
196
0.12 %
67
34.18 %
119
60.71 %
11
5.61 %
9
4.59 %
1
0.51 %
PAR-IR-SEV
153
1,216
0.74 %
316
25.99 %
827
68.01 %
88
7.24 %
61
5.02 %
12
0.99 %
PAR-OTHER
7
172
0.10 %
7
4.07 %
145
84.30 %
28
16.28 %
20
11.63 %
0
0.00 %
PAR-PERSIS
52
5,060
3.07 %
255
5.04 %
4514
89.21 %
374
7.39 %
275
5.43 %
16
0.32 %
PAR-RAPID
79
224
0.14 %
43
19.20 %
169
75.45 %
16
7.14 %
11
4.91 %
1
0.45 %
PAR-RECUR
24
2,220
1.35 %
87
3.92 %
1973
88.87 %
150
6.76 %
120
5.41 %
40
1.80 %
SER-FLEXI
40
2,863
1.74 %
122
4.26 %
2577
90.01 %
212
7.40 %
154
5.38 %
10
0.35 %
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 2023 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
8
18
0.01 %
2
11.11 %
14
77.78 %
2
11.11 %
2
11.11 %
0
0.00 %
PAR-IR-SEV
22
162
0.10 %
30
18.52 %
120
74.07 %
17
10.49 %
11
6.79 %
1
0.62 %
PAR-NEW-IN
2
152
0.09 %
13
8.55 %
131
86.18 %
10
6.58 %
8
5.26 %
0
0.00 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
9
1,379
0.84 %
31
2.25 %
1284
93.11 %
36
2.61 %
28
2.03 %
36
2.61 %
PAR-POSTM
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
30
50
0.03 %
5
10.00 %
43
86.00 %
3
6.00 %
2
4.00 %
0
0.00 %
PAR-RECUR
13
493
0.30 %
21
4.26 %
398
80.73 %
81
xx-xxxx-xxxx %
71
14.40 %
3
0.61 %
SER-FLEXI
8
2,469
1.50 %
55
2.23 %
2293
92.87 %
108
4.37 %
93
3.77 %
28
1.13 %
S Wales
PAR-IR-SEV
2
21
0.01 %
12
57.14 %
9
42.86 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
3
207
0.13 %
8
3.86 %
191
92.27 %
10
4.83 %
8
3.86 %
0
0.00 %
PAR-RAPID
2
2
0.00 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
63
0.04 %
4
6.35 %
44
69.84 %
16
25.40 %
15
23.81 %
0
0.00 %
W Glamorgan
PAR-OTHER
4
121
0.07 %
6
4.96 %
99
81.82 %
19
15.70 %
15
12.40 %
1
0.83 %
Wales - Intermediate TB
Carms
PAR-IR-SEV
2
14
0.01 %
9
64.29 %
5
35.71 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
3
253
0.15 %
43
17.00 %
195
77.08 %
15
5.93 %
14
5.53 %
1
0.40 %
PAR-RAPID
8
13
0.01 %
4
30.77 %
8
61.54 %
1
7.69 %
1
7.69 %
0
0.00 %
PAR-RECUR
7
493
0.30 %
23
4.67 %
442
89.66 %
27
5.48 %
23
4.67 %
5
1.01 %
Ceredigion
PAR-IR-EX
4
32
0.02 %
7
21.88 %
21
65.63 %
3
9.38 %
3
9.38 %
1
3.13 %
PAR-IR-SEV
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
341
0.21 %
45
13.20 %
271
79.47 %
29
8.50 %
25
7.33 %
0
0.00 %
PAR-RAPID
3
18
0.01 %
9
50.00 %
9
50.00 %
1
5.56 %
0
0.00 %
0
0.00 %
Cheshire
PAR-NEW-IN
2
12
0.01 %
0
0.00 %
9
75.00 %
5
41.67 %
3
25.00 %
0
0.00 %
Mid Glamorgan
PAR-RAPID
3
5
0.00 %
2
40.00 %
2
40.00 %
1
20.00 %
1
20.00 %
0
0.00 %
NE Wales
PAR-IR-EX
28
80
0.05 %
14
17.50 %
58
72.50 %
10
12.50 %
8
10.00 %
0
0.00 %
PAR-IR-SEV
27
238
0.14 %
38
15.97 %
193
81.09 %
9
3.78 %
7
2.94 %
0
0.00 %
PAR-NEW-IN
69
5,940
3.60 %
122
2.05 %
5417
91.20 %
438
7.37 %
368
6.20 %
33
0.56 %
PAR-OTHER
1
9
0.01 %
2
22.22 %
7
77.78 %
0
0.00 %
0
0.00 %
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 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
11
995
0.60 %
13
1.31 %
910
91.46 %
96
9.65 %
71
7.14 %
1
0.10 %
PAR-POSTM
12
65
0.04 %
6
9.23 %
56
86.15 %
4
6.15 %
3
4.62 %
0
0.00 %
PAR-RAPID
19
35
0.02 %
6
17.14 %
28
80.00 %
1
2.86 %
1
2.86 %
0
0.00 %
PAR-RECUR
5
129
0.08 %
3
2.33 %
106
82.17 %
29
22.48 %
20
15.50 %
0
0.00 %
SER-FLEXI
4
86
0.05 %
6
6.98 %
75
87.21 %
5
5.81 %
5
5.81 %
0
0.00 %
Powys
PAR-IR-EX
1
2
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
4
9
0.01 %
2
22.22 %
6
66.67 %
1
11.11 %
1
11.11 %
0
0.00 %
PAR-NEW-IN
11
863
0.52 %
21
2.43 %
753
87.25 %
100
11.59 %
86
9.97 %
3
0.35 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
287
0.17 %
13
4.53 %
261
90.94 %
16
5.57 %
13
4.53 %
0
0.00 %
PAR-RAPID
2
29
0.02 %
3
10.34 %
26
89.66 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
128
0.08 %
0
0.00 %
118
92.19 %
13
10.16 %
10
7.81 %
0
0.00 %
S Glamorgan
PAR-RAPID
4
8
0.00 %
1
12.50 %
7
87.50 %
0
0.00 %
0
0.00 %
0
0.00 %
Shropshire
PAR-PERSIS
2
5
0.00 %
0
0.00 %
5
100.00 %
1
20.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Conwy
PAR-NEW-IN
3
217
0.13 %
0
0.00 %
208
95.85 %
13
5.99 %
8
3.69 %
1
0.46 %
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-SEV
3
6
0.00 %
0
0.00 %
5
83.33 %
1
16.67 %
1
16.67 %
0
0.00 %
PAR-NEW-IN
99
6,851
4.16 %
177
2.58 %
6197
90.45 %
580
8.47 %
453
6.61 %
24
0.35 %
PAR-OTHER
2
11
0.01 %
1
9.09 %
7
63.64 %
3
27.27 %
3
27.27 %
0
0.00 %
PAR-PERSIS
2
39
0.02 %
0
0.00 %
37
94.87 %
4
10.26 %
2
5.13 %
0
0.00 %
PAR-POSTM
5
5
0.00 %
2
40.00 %
3
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
3
0.00 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
5
291
0.18 %
10
3.44 %
267
91.75 %
18
6.19 %
13
4.47 %
1
0.34 %
NE Wales
PAR-IR-EX
3
8
0.00 %
2
25.00 %
6
75.00 %
1
12.50 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
4
13
0.01 %
4
30.77 %
9
69.23 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
64
4,864
2.95 %
98
2.01 %
4211
86.57 %
529
10.88 %
317
6.52 %
238
4.89 %
PAR-POSTM
9
23
0.01 %
3
13.04 %
20
86.96 %
1
4.35 %
0
0.00 %
0
0.00 %
PAR-RAPID
4
9
0.01 %
0
0.00 %
8
88.89 %
1
11.11 %
1
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 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
SER-FLEXI
4
165
0.10 %
12
7.27 %
138
83.64 %
17
10.30 %
15
9.09 %
0
0.00 %
NW Wales
PAR-NEW-IN
2
24
0.01 %
0
0.00 %
23
95.83 %
1
4.17 %
1
4.17 %
0
0.00 %
Wales
1254
48135
29.20 %
2418
5.02 %
42475
88.24 %
3667
7.62 %
2754
5.72 %
488
1.01 %
Scotland - Scotland
Ayrshire
PAR-NEW-IN
22
2,289
1.39 %
96
4.19 %
1957
85.50 %
271
11.84 %
231
10.09 %
5
0.22 %
Kirkcudbright
PAR-CUL-N
1
9
0.01 %
0
0.00 %
8
88.89 %
1
11.11 %
1
11.11 %
0
0.00 %
PAR-NEW-IN
26
4,826
2.93 %
196
4.06 %
4342
89.97 %
330
6.84 %
288
5.97 %
0
0.00 %
Perthshire
PAR-OTHER
1
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Renfrew
SER-OTHER
1
2
0.00 %
0
0.00 %
2
100.00 %
1
50.00 %
0
0.00 %
0
0.00 %
Roxburgh
PAR-CUL-N
1
129
0.08 %
6
4.65 %
119
92.25 %
5
3.88 %
4
3.10 %
0
0.00 %
PAR-NEW-IN
1
217
0.13 %
1
0.46 %
213
98.16 %
2
0.92 %
2
0.92 %
1
0.46 %
West lothian
PAR-NEW-IN
9
797
0.48 %
31
3.89 %
640
80.30 %
61
7.65 %
58
7.28 %
68
8.53 %
Wigtown
PAR-NEW-IN
29
2,339
1.42 %
124
5.30 %
2003
85.63 %
232
9.92 %
209
8.94 %
3
0.13 %
Scotland
91
10610
6.44 %
454
4.28 %
9286
87.52 %
903
8.51 %
793
7.47 %
77
0.73 %
Grand Total
Sum:
xx-xxxx-xxxx
7031
146677
11684
9302
1848
*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 September 2023
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
88
10115
100.0%
337
3.3%
9235
91.3%
665
6.6%
480
4.7%
63
0.6%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
88
10115
100.0%
337
3.3%
9235
91.3%
665
6.6%
480
4.7%
63
0.6%
Scotland
Parallel
18
2545
100.0%
59
2.3%
2333
91.7%
176
6.9%
152
6.0%
1
0.0%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
18
2545
100.0%
59
2.3%
2333
91.7%
176
6.9%
152
6.0%
1
0.0%
Wales
Parallel
108
5302
98.0%
240
4.5%
4765
89.9%
376
7.1%
281
5.3%
16
0.3%
Serial/Extended
7
108
2.0%
2
1.9%
91
84.3%
13
12.0%
12
11.1%
3
2.8%
Total
115
5410
100.0%
242
4.5%
4856
89.8%
389
7.2%
293
5.4%
19
0.4%
GB
Parallel
214
17962
99.4%
636
3.5%
16333
90.9%
1217
6.8%
913
5.1%
80
0.4%
Serial/Extended
7
108
0.6%
2
1.9%
91
84.3%
13
12.0%
12
11.1%
3
2.8%
Total
221
18070
100.0%
638
3.5%
xx-xxxx-xxxx
90.9%
1230
6.8%
925
5.1%
83
0.5%
88.00
115.00
18.00
* 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 2023)
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
747 106058
99.9%
4156
3.9%
94868
89.4%
7110
6.7%
5751
5.4%
1283
1.2%
Serial/Extended
2
55
0.1%
3
5.5%
48
87.3%
4
7.3%
4
7.3%
0
0.0 %
Total
749 106113
100.0%
4159
3.9%
94916
89.4%
7114
6.7%
5755
5.4%
1283
1.2%
Scotland
Parallel
90
10608
100.0%
454
4.3%
9284
87.5%
902
8.5%
793
7.5%
77
0.7%
Serial/Extended
1
2
0.0%
0
0.0 %
2 100.0%
1
50.0%
0
0.0 %
0
0.0 %
Total
91
10610
100.0%
454
4.3%
9286
87.5%
903
8.5%
793
7.5%
77
0.7%
Wales
Parallel
1154
39357
81.8%
2002
5.1%
34552
87.8%
3155
8.0%
2365
6.0%
438
1.1%
Serial/Extended
100
8778
18.2%
416
4.7%
7923
90.3%
512
5.8%
389
4.4%
50
0.6%
Total
1254
48135
100.0%
2418
5.0%
42475
88.2%
3667
7.6%
2754
5.7%
488
1.0%
GB
Parallel
1991 156023
94.6%
6612
4.2% 138704
88.9%
11167
7.2%
8909
5.7%
1798
1.2%
Serial/Extended
103
8835
5.4%
419
4.7%
7973
90.2%
517
5.9%
393
4.4%
50
0.6%
Total
xx-xxxx-xxxx
100.0%
7031
4.3% 146677
89.0%
11684
7.1%
9302
5.6%
1848
1.1%
749.00
#######
91.00
* 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
7
108
0.6%
2
1.9%
91
84.3%
13
12.0 %
12
11.1 %
3
2.8 %
Parallel - Herd or Group Slaughter
1
1
0.0%
0
0.0 %
0
0.0 %
1
100.0 %
1
100.0 %
0
Parallel - IRs in Exit Strategy for persistent her
10
42
0.2%
11
26.2%
30
71.4%
2
4.8 %
1
2.4 %
0
Parallel New Infection
44
5223
28.9%
111
2.1%
4743
90.8%
433
8.3 %
357
6.8 %
12
0.2 %
Parallel - new infection cull area
3
199
1.1%
12
6.0%
181
91.0%
7
3.5 %
6
3.0 %
0
Parallel - Other
8
623
3.4%
19
3.0%
562
90.2%
62
10.0 %
41
6.6 %
1
0.2 %
Parallel Persistent Infection
26
3007
16.6%
118
3.9%
2703
89.9%
233
7.7 %
175
5.8 %
11
0.4 %
Parallel - persistent infection cull area
1
220
1.2%
4
1.8%
202
91.8%
22
10.0 %
14
6.4 %
0
Parallel - Rapid Testing Two-times IRs
27
57
0.3%
3
5.3%
52
91.2%
3
5.3 %
2
3.5 %
0
Parallel - Recurrent breakdowns
57
8236
45.6%
290
3.5%
7595
92.2%
429
5.2 %
296
3.6 %
55
0.7 %
Parallel - severe IRs - in persistent herds
37
354
2.0%
68
19.2%
265
74.9%
25
7.1 %
20
5.6 %
1
0.3 %
Total
221
18070
100.0%
638
3.5%
xx-xxxx-xxxx
90.9%
1230
6.8 %
925
5.1 %
83
0.5 %
Table 4a. Summaryof IFN Gamma results by submission reason (September 2023)
England - HRA
Parallel - new infection cull area
1
58
0.3%
5
8.6%
52
89.7%
1
1.7 %
1
1.7 %
0
Parallel - Other
6
524
2.9%
19
3.6%
476
90.8%
46
8.8 %
28
5.3 %
1
0.2 %
Parallel Persistent Infection
7
296
1.6%
6
2.0%
250
84.5%
39
13.2 %
35
11.8 %
5
1.7 %
Parallel - persistent infection cull area
1
220
1.2%
4
1.8%
202
91.8%
22
10.0 %
14
6.4 %
0
Parallel - Recurrent breakdowns
43
6777
37.5%
258
3.8%
6277
92.6%
351
5.2 %
239
3.5 %
3
0.0 %
England - HRA
58
7875
43.6%
292
3.7%
7257
92.2%
459
5.8 %
317
4.0 %
9
0.1 %
England - Edge
Parallel - Herd or Group Slaughter
1
1
0.0%
0
0.0 %
0
0.0 %
1
100.0 %
1
100.0 %
0
Parallel New Infection
9
508
2.8%
15
3.0%
462
90.9%
35
6.9 %
31
6.1 %
0
Parallel - new infection cull area
1
12
0.1%
1
8.3%
10
83.3%
1
8.3 %
1
8.3 %
0
Parallel Persistent Infection
4
366
2.0%
4
1.1%
349
95.4%
17
4.6 %
13
3.6 %
0
Parallel - Recurrent breakdowns
5
459
2.5%
15
3.3%
371
80.8%
26
5.7 %
21
4.6 %
52
11.3 %
England - Edge
20
1346
7.4%
35
2.6%
1192
88.6%
80
5.9 %
67
5.0 %
52
3.9 %
England - LRA
Parallel New Infection
9
878
4.9%
10
1.1%
771
87.8%
125
14.2 %
95
10.8 %
2
0.2 %
Parallel - Other
1
16
0.1%
0
0.0 %
15
93.8%
1
6.3 %
1
6.3 %
0
England - LRA
10
894
4.9%
10
1.1%
786
87.9%
126
14.1 %
96
10.7 %
2
0.2 %
Wales - High TB
Extended Flexible IFN-GAMMA test
7
108
0.6%
2
1.9%
91
84.3%
13
12.0 %
12
11.1 %
3
2.8 %
Parallel - IRs in Exit Strategy for persistent her
8
39
0.2%
10
25.6%
29
74.4%
1
2.6 %
0
0
Parallel - Other
1
83
0.5%
0
0.0 %
71
85.5%
15
18.1 %
12
14.5 %
0
Parallel Persistent Infection
12
1715
9.5%
94
5.5%
1523
88.8%
127
7.4 %
92
5.4 %
6
0.3 %
Parallel - Rapid Testing Two-times IRs
21
50
0.3%
3
6.0%
45
90.0%
2
4.0 %
2
4.0 %
0
Parallel - Recurrent breakdowns
8
988
5.5%
17
1.7%
935
94.6%
51
5.2 %
36
3.6 %
0
Parallel - severe IRs - in persistent herds
30
298
1.6%
57
19.1%
224
75.2%
21
7.0 %
16
5.4 %
1
0.3 %
Wales - High TB
87
3281
18.2%
183
5.6%
2918
88.9%
230
7.0 %
170
5.2 %
10
0.3 %
Wales - Intermediate TB
Parallel - IRs in Exit Strategy for persistent her
2
3
0.0%
1
33.3%
1
33.3%
1
33.3 %
1
33.3 %
0
Parallel New Infection
4
1104
6.1%
11
1.0%
1030
93.3%
68
6.2 %
54
4.9 %
9
0.8 %
Parallel Persistent Infection
2
598
3.3%
14
2.3%
550
92.0%
47
7.9 %
34
5.7 %
0
Parallel - Rapid Testing Two-times IRs
6
7
0.0%
0
0.0 %
7
100.0%
1
14.3 %
0
0
Parallel - Recurrent breakdowns
1
12
0.1%
0
0.0 %
12
100.0%
1
8.3 %
0
0
Parallel - severe IRs - in persistent herds
6
54
0.3%
11
20.4%
39
72.2%
4
7.4 %
4
7.4 %
0
Wales - Intermediate TB
21
1778
9.8%
37
2.1%
1639
92.2%
122
6.9 %
93
5.2 %
9
0.5 %
Wales - Low TB
Parallel New Infection
5
317
1.8%
22
6.9%
266
83.9%
34
10.7 %
29
9.1 %
0
Parallel Persistent Infection
1
32
0.2%
0
0.0 %
31
96.9%
3
9.4 %
1
3.1 %
0
Parallel - severe IRs - in persistent herds
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Wales - Low TB
7
351
1.9%
22
6.3%
299
85.2%
37
10.5 %
30
8.5 %
0
Scotland - Scotland
Parallel New Infection
17
2416
13.4%
53
2.2%
2214
91.6%
171
7.1 %
148
6.1 %
1
0.0 %
Parallel - new infection cull area
1
129
0.7%
6
4.7%
119
92.2%
5
3.9 %
4
3.1 %
0
Scotland - Scotland
18
2545
14.1%
59
2.3%
2333
91.7%
176
6.9 %
152
6.0 %
1
0.0 %

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Anomalous reaction
4
17
0.0%
0
0.0 %
15
88.2%
2
11.8 %
2
11.8 %
0
Extended Flexible IFN-GAMMA test
97
8802
5.3%
419
4.8%
7943
90.2%
513
5.8 %
390
4.4 %
50
0.6 %
Parallel – chronic breakdown
15
2339
1.4%
109
4.7%
2047
87.5%
222
9.5 %
182
7.8 %
1
0.0 %
Parallel - Herd or Group Slaughter
6
461
0.3%
36
7.8%
388
84.2%
54
11.7 %
37
8.0 %
0
Parallel - IRs in Exit Strategy for persistent herds
114
457
0.3%
130
28.4%
296
64.8%
34
7.4 %
29
6.3 %
2
0.4 %
Parallel New Infection
529
51030
31.0%
1496
2.9%
45341
88.9%
4124
8.1 %
3341
6.5 %
852
1.7 %
Parallel - new infection cull area
30
4572
2.8%
211
4.6%
4134
90.4%
264
5.8 %
211
4.6 %
16
0.3 %
Parallel - Other
60
4436
2.7%
263
5.9%
3897
87.8%
313
7.1 %
247
5.6 %
29
0.7 %
Parallel Persistent Infection
158
18050
10.9%
746
4.1%
16312
90.4%
1187
6.6 %
914
5.1 %
78
0.4 %
Parallel - persistent infection cull area
2
759
0.5%
35
4.6%
683
90.0%
54
7.1 %
40
5.3 %
1
0.1 %
Parallel – post-mvt test coupled with IDEXX anti
27
94
0.1%
11
11.7%
80
85.1%
5
5.3 %
3
3.2 %
0
Parallel - Rapid Testing Two-times IRs
250
628
0.4%
131
20.9%
467
74.4%
38
6.1 %
27
4.3 %
3
0.5 %
Parallel - Recurrent breakdowns
511
71049
43.1%
2906
4.1%
63567
89.5%
4726
6.7 %
3773
5.3 %
803
1.1 %
Parallel - severe IRs - in persistent herds
289
2148
1.3%
538
25.0%
1492
69.5%
146
6.8 %
105
4.9 %
13
0.6 %
Serial - Anomalous Reaction
1
14
0.0%
0
0.0 %
13
92.9%
1
7.1 %
1
7.1 %
0
Serial - Other
1
2
0.0%
0
0.0 %
2
100.0%
1
50.0 %
0
0
Total
xx-xxxx-xxxx
100.0%
7031
4.3%
146677
89.0%
11684
7.1 %
9302
5.6 %
1848
1.1 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2023)
England - HRA
Parallel – chronic breakdown
15
2339
1.4%
109
4.7%
2047
87.5%
222
9.5 %
182
7.8 %
1
0.0 %
Parallel - Herd or Group Slaughter
3
457
0.3%
36
7.9%
385
84.2%
52
11.4 %
36
7.9 %
0
Parallel - new infection cull area
25
4227
2.6%
201
4.8%
3811
90.2%
251
5.9 %
199
4.7 %
16
0.4 %
Parallel - Other
25
2567
1.6%
153
6.0%
2274
88.6%
175
6.8 %
132
5.1 %
8
0.3 %
Parallel Persistent Infection
29
4323
2.6%
203
4.7%
3905
90.3%
258
6.0 %
202
4.7 %
13
0.3 %
Parallel - persistent infection cull area
2
759
0.5%
35
4.6%
683
90.0%
54
7.1 %
40
5.3 %
1
0.1 %
Parallel - Recurrent breakdowns
377
59824
36.3%
2508
4.2%
53527
89.5%
3886
6.5 %
3107
5.2 %
682
1.1 %
England - Edge
Extended Flexible IFN-GAMMA test
2
55
0.0%
3
5.5%
48
87.3%
4
7.3 %
4
7.3 %
0
Parallel - Herd or Group Slaughter
1
1
0.0%
0
0.0 %
0
0.0 %
1
100.0 %
1
100.0 %
0
Parallel New Infection
123
13123
8.0%
386
2.9%
11902
90.7%
800
6.1 %
649
4.9 %
186
1.4 %

Table 4b. Summary of IFN Gamma results by submission reason (Total 2023) Cont.
Parallel - new infection cull area
3
207
0.1%
4
1.9%
196
94.7%
7
3.4 %
7
3.4 %
0
Parallel - Other
5
767
0.5%
44
5.7%
686
89.4%
20
2.6 %
18
2.3 %
19
2.5 %
Parallel Persistent Infection
16
2865
1.7%
76
2.7%
2605
90.9%
218
7.6 %
184
6.4 %
0
Parallel - Recurrent breakdowns
50
5735
3.5%
168
2.9%
5184
90.4%
390
6.8 %
316
5.5 %
67
1.2 %
England - LRA
Parallel New Infection
67
8516
5.2%
231
2.7%
7335
86.1%
752
8.8 %
660
7.8 %
290
3.4 %
Parallel - Other
2
223
0.1%
0
0.0 %
206
92.4%
20
9.0 %
17
7.6 %
0
Parallel Persistent Infection
3
46
0.0%
0
0.0 %
46
100.0%
1
2.2 %
0
0
Parallel - Recurrent breakdowns
1
79
0.0%
2
2.5%
76
96.2%
3
3.8 %
1
1.3 %
0
England
749 106113
64.4%
4159
3.9%
94916
89.4%
7114
6.7 %
5755
5.4 %
1283
1.2 %
Wales - High TB
Anomalous reaction
4
17
0.0%
0
0.0 %
15
88.2%
2
11.8 %
2
11.8 %
0
Extended Flexible IFN-GAMMA test
87
8496
5.2%
398
4.7%
7682
90.4%
487
5.7 %
366
4.3 %
50
0.6 %
Parallel - Herd or Group Slaughter
1
2
0.0%
0
0.0 %
2
100.0%
1
50.0 %
0
0
Parallel - IRs in Exit Strategy for persistent herd
78
335
0.2%
105
31.3%
211
63.0%
20
6.0 %
18
5.4 %
1
0.3 %
Parallel New Infection
2
152
0.1%
13
8.6%
131
86.2%
10
6.6 %
8
5.3 %
0
Parallel - Other
20
603
0.4%
20
3.3%
519
86.1%
80
13.3 %
63
10.4 %
1
0.2 %
Parallel Persistent Infection
92
9149
5.5%
396
4.3%
8272
90.4%
564
6.2 %
417
4.6 %
64
0.7 %
Parallel – post-mvt test coupled with IDEXX ant
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Parallel - Rapid Testing Two-times IRs
205
508
0.3%
105
20.7%
377
74.2%
33
6.5 %
23
4.5 %
3
0.6 %
Parallel - Recurrent breakdowns
63
4370
2.7%
192
4.4%
3847
88.0%
360
8.2 %
283
6.5 %
48
1.1 %
Parallel - severe IRs - in persistent herds
248
1867
1.1%
484
25.9%
1274
68.2%
135
7.2 %
96
5.1 %
13
0.7 %
Serial - Anomalous Reaction
1
14
0.0%
0
0.0 %
13
92.9%
1
7.1 %
1
7.1 %
0
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
4
86
0.1%
6
7.0%
75
87.2%
5
5.8 %
5
5.8 %
0
Parallel - IRs in Exit Strategy for persistent herd
33
114
0.1%
23
20.2%
79
69.3%
13
11.4 %
11
9.6 %
1
0.9 %
Parallel New Infection
82
6815
4.1%
143
2.1%
6179
90.7%
543
8.0 %
457
6.7 %
36
0.5 %
Parallel - Other
5
263
0.2%
45
17.1%
203
77.2%
15
5.7 %
14
5.3 %
1
0.4 %
Parallel Persistent Infection
16
1628
1.0%
71
4.4%
1447
88.9%
142
8.7 %
109
6.7 %
1
0.1 %
Parallel – post-mvt test coupled with IDEXX ant
12
65
0.0%
6
9.2%
56
86.2%
4
6.2 %
3
4.6 %
0
Parallel - Rapid Testing Two-times IRs
39
108
0.1%
25
23.1%
80
74.1%
4
3.7 %
3
2.8 %
0
Parallel - Recurrent breakdowns
15
750
0.5%
26
3.5%
666
88.8%
69
9.2 %
53
7.1 %
5
0.7 %
Parallel - severe IRs - in persistent herds
34
262
0.2%
50
19.1%
204
77.9%
10
3.8 %
8
3.1 %
0
Wales - Low TB
Extended Flexible IFN-GAMMA test
4
165
0.1%
12
7.3%
138
83.6%
17
10.3 %
15
9.1 %
0
Parallel - Herd or Group Slaughter
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Parallel - IRs in Exit Strategy for persistent herd
3
8
0.0%
2
25.0%
6
75.0%
1
12.5 %
0
0

Table 4b. Summary of IFN Gamma results by submission reason (Total 2023) Cont.
Parallel New Infection
168
11956
7.3%
275
2.3%
10639
89.0%
1123
9.4 %
779
6.5 %
263
2.2 %
Parallel - Other
2
11
0.0%
1
9.1%
7
63.6%
3
27.3 %
3
27.3 %
0
Parallel Persistent Infection
2
39
0.0%
0
0.0 %
37
94.9%
4
10.3 %
2
5.1 %
0
Parallel – post-mvt test coupled with IDEXX ant
14
28
0.0%
5
17.9%
23
82.1%
1
3.6 %
0
0
Parallel - Rapid Testing Two-times IRs
6
12
0.0%
1
8.3%
10
83.3%
1
8.3 %
1
8.3 %
0
Parallel - Recurrent breakdowns
5
291
0.2%
10
3.4%
267
91.8%
18
6.2 %
13
4.5 %
1
0.3 %
Parallel - severe IRs - in persistent herds
7
19
0.0%
4
21.1%
14
73.7%
1
5.3 %
1
5.3 %
0
Wales
1254
48135
29.2%
2418
5.0%
42475
88.2%
3667
7.6 %
2754
5.7 %
488
1.0 %
Scotland - Scotland
Parallel New Infection
87
10468
6.3%
448
4.3%
9155
87.5%
896
8.6 %
788
7.5 %
77
0.7 %
Parallel - new infection cull area
2
138
0.1%
6
4.3%
127
92.0%
6
4.3 %
5
3.6 %
0
Parallel - Other
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Serial - Other
1
2
0.0%
0
0.0 %
2
100.0%
1
50.0 %
0
0
Scotland
91
10610
6.4%
454
4.3%
9286
87.5%
903
8.5 %
793
7.5 %
77
0.7 %

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 October
180
xx-xxxx-xxxx
100
620
12
0
0
0
0
66
0
0
21
0
495
0
26
0
0
November
201
15848
120
673
16
0
0
0
0
60
1
1
13
0
504
1
77
0
0
December
200
13735
109
545
36
0
0
0
0
26
1
0
10
0
431
0
41
0
0
2023 January
281
23696
176
1138
10
0
0
0
0
83
3
0
17
0
922
1
100
2
0
February
265
17538
147
1036
6
0
0
0
0
69
1
4
31
0
837
0
88
0
0
March
266
19894
159
867
9
0
0
0
0
76
0
0
11
0
703
1
67
0
0
April
203
16194
118
782
1
10
0
0
0
0
53
6
0
11
0
634
0
58
1
4
May
208
13834
112
582
9
0
0
0
0
44
2
0
2
0
488
0
37
0
0
June
189
xx-xxxx-xxxx
94
524
2
0
0
0
0
33
1
1
9
0
447
0
31
0
0
July
209
18470
108
597
16
0
0
0
0
80
0
1
10
3
436
9
39
0
0
August
252
20681
140
867
67
0
0
0
0
96
0
16
8
0
626
52
0
0
2
September
221
18070
112
638
176
240
0
0
0
0
4
0
0
0
0
40
2
0
0
0
Totals (last
12 months)
2675
210847
1495
8869
177
433
0
0
0
0
690
15
23
143
3
6563
66
564
3
6
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
940
134901
639
5089
189
0
0
0
0
541
5
18
40
2
4019
11
20
1
2
Scotland
105
11809
63
495
62
0
0
0
0
122
1
1
31
0
242
2
24
0
0
Wales
1630
64137
793
3285
182
0
0
0
0
27
9
4
72
1
2302
53
520
2
4
Totals
2675
210847
1495
8869
433
0
0
0
0
690
15
23
143
3
6563
66
564
3
6
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
105
176
118
147
107
159
85
118
96
112
95
94
101
108
112
140
109
112
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
January
February
March
April
May
June
July
August
September
2021
2022
2023
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
21877
1138
16071
1036
18641
867
15246
782
13167
582
15789
524
17758
597
19561
867
17206
638
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
January
February
March
April
May
June
July
August
September
2021
2022
2023
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
January
February
March
April
May
June
July
August
September
2021
2022
2023
%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
10
20
30
40
50
60
70
80
Wiltshire
Warks
Surrey
Somerset excl N
S Glamorgan
Powys
Oxon
Northumb
Kirkcudbright
Herts
Hampshire
Gwent
Gloucs
Dorset
Cumbria
Cheshire
Carms
Berks
Avon
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during September 2023 (% submission per
County)
County
%Resampled %Retested
Avon
2.60 %
3.90 %
Ayrshire
10.63 %
12.93 %
Berks
3.38 %
5.41 %
Bucks
33.33 %
33.33 %
Carms
4.88 %
6.83 %
Ceredigion
4.35 %
13.04 %
Cheshire
3.70 %
4.76 %
Corn & Scilly
4.06 %
5.43 %
Cumbria
6.25 %
6.25 %
Devon
5.34 %
9.09 %
Dorset
5.20 %
5.78 %
E Sussex
7.95 %
8.26 %
Gloucs
2.56 %
3.48 %
Gr Manchester
10.91 %
12.73 %
Gwent
6.99 %
10.48 %
Gwynedd
4.17 %
6.06 %
Hampshire
Heref
1.71 %
3.24 %
Herts
2.68 %
4.03 %
Humberside
16.18 %
22.01 %
Kirkcudbright
3.75 %
4.52 %
NE Wales
6.28 %
8.01 %
Northumb
14.29 %
28.57 %
N Yorks
7.51 %
9.83 %
Oxon
5.05 %
6.06 %
Pembs
4.94 %
6.57 %
Powys
5.05 %
5.85 %
Roxburgh
1.73 %
2.02 %
S Glamorgan
Shropshire
3.92 %
6.59 %
Somerset excl
3.97 %
4.80 %
Staffs
6.54 %
8.53 %
Surrey
15.00 %
20.00 %
S Wales
30.00 %
40.00 %
Warks
3.75 %
5.00 %

Wigtown
7.94 %
8.79 %
Wiltshire
3.58 %
4.78 %

Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
10034
337
3.4%
10115
337
3.3%
Wales
5376
242
4.5%
5410
242
4.5%
Scotland
2434
59
2.4%
2545
59
2.3%
GB
17844
638
3.6%
18070
638
3.5%
Table 6a (i): Number of animals and submissions tested in September 2023
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
100414
4158
4.1%
106113
4159
3.9%
Wales
45148
2418
5.4%
48135
2418
5.0%
Scotland
6577
454
6.9%
10610
454
4.3%
GB
152121
7030
4.6%
xx-xxxx-xxxx
7031
4.3%
Table 6b (i): Number of animals and submissions tested in 2023 Up to end of September
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
10752
436
4.1%
10842
436
4.0%
Wales
3605
176
4.9%
3634
176
4.8%
Scotland
1958
60
3.1%
1958
60
3.1%
GB
16315
672
4.1%
xx-xxxx-xxxx
672
4.1%
Table 6a (ii): Number of animals and submissions tested in September 2022
Table 6b (ii): Number of animals and submissions tested in 2022 Up to end of September
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
117134
4620
3.9%
125098
4620
3.7%
Wales
37319
2331
6.2%
39844
2331
5.9%
Scotland
3149
85
2.7%
3230
85
2.6%
GB
157600
7036
4.5%
xx-xxxx-xxxx
7036
4.2%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
Devon
PRV-SE
2
112
4
3.57 %
PRV-SP
1
1
0
0
Essex
PRV-SP
1
5
0
0
Total
4
118
4
3.39 %
*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 September 2023
Table 7b Number of private samples 2023
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
Cornwall and Isles of Scilly
PRV-SP
4
27
0
0
Cumbria
PRV-SE
1
3
3
100.00 %
Devon
PRV-SE
7
214
14
6.54 %
PRV-SP
2
3
0
0
Essex
PRV-SP
1
5
0
0
Gloucestershire
PRV-SE
1
51
2
3.92 %
PRV-SP
1
2
0
0
Herefordshire
PRV-SP
1
1
0
0
Kent
PRV-SP
2
13
0
0
Northamptonshire
PRV-SE
1
6
3
50.00 %
Oxfordshire
PRV-SP
2
2
0
0
Shropshire
PRV-SP
2
2
0
0
Somerset excl North
PRV-SE
1
1
0
0
PRV-SP
1
1
0
0
Warwickshire
PRV-SE
1
7
0
0
West Sussex
PRV-SE
4
553
24
4.34 %
PRV-SP
1
5
0
0
Total
33
896
46
5.13 %

Country
County
Test Reason
Num
Submissions
Num Samples
Tested
Num Positive
Samples
% Positive
England
Cornwall and Isles of
Scilly
BOV-OTHER
1
27
2
7.4%
Herefordshire
BOV-P
1
316
8
2.5%
England
2
343
10
2.9%
Wales
Carmarthenshire
BOV-IR-C
6
46
3
6.5%
BOV-OTHER
1
32
0
0
Ceredigion
BOV-IR-C
2
11
0
0
North East Wales
BOV-IR-C
7
49
4
8.2%
Pembrokeshire
BOV-IR-C
23
310
25
8.1%
BOV-IR-EX
6
35
1
2.9%
Powys
BOV-IR-C
3
34
2
5.9%
BOV-IR-EX
1
1
1
100.0%
South Wales
BOV-IR-C
4
30
1
3.3%
Wales
53
548
37
6.8%
All GB
55
891
47
5.3 %
Table 8a Number of Cattle Antibody Tests September 2023
Table 8b Number of Cattle Antibody Tests 2023
Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
England
Cornwall and Isles of
Scilly
BOV-OTHER
1
27
2
7.4%
BOV-P
2
569
38
6.7%
Herefordshire
BOV-P
1
316
8
2.5%
Northern Somerset &
South
Gloucestershire
BOV-P
1
5
0
0
Somerset excl North
BOV-P
1
145
6
4.1%
England
6
1,062
54
5.1%
Scotland
Ayrshire
BOV-OTHER
1
2
1
50.0%
Scotland
1
2
1
50.0%
Wales
Carmarthenshire
BOV-IR-C
32
252
59
23.4%
BOV-IR-EX
6
36
5
13.9%
BOV-OTHER
4
196
13
6.6%
BOV-P
2
90
7
7.8%
Ceredigion
BOV-IR-C
23
214
33
15.4%
BOV-IR-EX
5
56
11
19.6%
BOV-OTHER
2
113
3
2.7%
North East Wales
BOV-IR-C
25
198
32
16.2%
BOV-IR-EX
5
26
0
0
BOV-OTHER
1
54
0
0
BOV-P
2
67
2
3.0%
BOV-POSTM
8
21
5
23.8%
Pembrokeshire
BOV-IR-C
126
1,271
196
15.4%
BOV-IR-EX
26
179
26
14.5%
BOV-OTHER
14
1,434
60
4.2%
BOV-P
5
143
12
8.4%
Powys
1
8
1
12.5%

Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
BOV-IR-C
28
174
22
12.6%
BOV-IR-EX
2
9
1
11.1%
BOV-OTHER
1
113
5
4.4%
South Wales
BOV-IR-C
11
78
14
17.9%
BOV-IR-EX
4
28
12
42.9%
BOV-OTHER
1
30
1
3.3%
BOV-P
5
255
16
6.3%
Wales
339
5,045
536
10.6%
All GB
346
6,109
591
9.7 %