Monthly Report: Surveillance Project SB4008 IFNg (TC0651 and TC0751) & Antibody (TC0077) tests for bovine tuberculosis-November 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 November 2023
Issued 12 December 2023
207

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
November
2023
%
Total 2023
%
Submissions
250
2597
Samples
Total (%)
22290
100.00 %
205804
100.00 %
England
15067
67.60 %
134916
65.56 %
Wales
6796
30.49 %
59406
28.87 %
Scotland
427
1.92 %
11482
5.58 %
Parallel Tests
PAR-CHR
827
3.71 %
3281
1.59 %
PAR-CUL-N
353
1.58 %
6262
3.04 %
PAR-CUL-P
6
0.03 %
765
0.37 %
PAR-HERD-S
0
0.00 %
461
0.22 %
PAR-IR-EX
37
0.17 %
573
0.28 %
PAR-IR-SEV
288
1.29 %
2836
1.38 %
PAR-NEW-IN
5873
26.35 %
62685
30.46 %
PAR-OTHER
701
3.14 %
5496
2.67 %
PAR-PERSIS
4784
21.46 %
24416
11.86 %
PAR-POSTM
0
0.00 %
94
0.05 %
PAR-RAPID
88
0.39 %
819
0.40 %
PAR-RECUR
8288
37.18 %
87078
42.31 %
Total(% of all samples)
21245
95.31 %
194766
94.64 %
Serial/Extended Tests
SER-ANOM
0
0.00 %
17
0.01 %
SER-FLEXI
1010
4.53 %
10970
5.33 %
SER-FRAUD
0
0.00 %
14
0.01 %
SER-NSR
0
0.00 %
SER-OTHER
35
0.16 %
37
0.02 %
Total(% of all samples)
1045
4.69 %
11038
5.36 %
Total
22290
100.00 %
205804
100.00 %
Retests
Total (% of all samples)
1093
4.90 %
13696
6.65 %
England
668
3.00 %
8460
4.11 %
Wales
386
1.73 %
4277
2.08 %
Scotland
39
0.17 %
959
0.47 %
Resamples
Total (% of all samples)
844
3.79 %
10886
5.29 %
England
500
2.24 %
6806
3.31 %
Wales
312
1.40 %
3240
1.57 %
Scotland
32
0.14 %
840
0.41 %
Rejects
Total (% of all samples)
345
1.55 %
2283
1.11 %
England
285
1.28 %
1624
0.79 %
Wales
60
0.27 %
580
0.28 %
Scotland
0
0.00 %
79
0.04 %
Table 1. Monthly Totals for November 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
PAR-CUL-N
PAR-CUL-P
PAR-IR-EX
PAR-IR-SEV
PAR-NEW-IN
PAR-OTHER
PAR-PERSIS
PAR-RAPID
PAR-RECUR
SER-FLEXI
SER-OTHER
Breakdown of
Reason for
submission
PAR-CHR
827
3.7 %
PAR-CUL-N
353
1.6 %
PAR-CUL-P
6
0.0 %
PAR-IR-EX
37
0.2 %
PAR-IR-SEV
288
1.3 %
PAR-NEW-IN
5873
26.3 %
PAR-OTHER
701
3.1 %
PAR-PERSIS
4784
21.5 %
PAR-RAPID
88
0.4 %
PAR-RECUR
8288
37.2 %
SER-FLEXI
1010
4.5 %
SER-OTHER
35
0.2 %
Total
22290
100.00 %
Figure 1. Number of samples submitted in each category during November 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
3000
3500
4000
Argyll & Bute
S Wales
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
W Sussex
Worcs
W Midlands
Wiltshire
Warks
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
N Somer S Glos
Lincs
Leics & Rut
Humberside
Heref
Gloucs
E Sussex
Essex
Dorset
Devon
Cumbria
Corn & Scilly
Cheshire
Bucks
Beds
Avon
Scotland
Wales
England
SER-OTHER
SER-FLEXI
PAR-RECUR
PAR-RAPID
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-IR-SEV
PAR-IR-EX
PAR-CUL-P
PAR-CUL-N
PAR-CHR
Breakdown of
Samples
submitted by
County
Figure 2. Number of samples submitted in each category by County during November 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
5000
10000
15000
20000
25000
Wigtown
West lothian
Roxburgh
Renfrew
Perthshire
Kirkcudbright
Ayrshire
Argyll & Bute
W Glamorgan
S Wales
Shropshire
S Glamorgan
Powys
Pembs
NW Wales
NE Wales
Monmouthshire and newport
Mid Glamorgan
Gwynedd
Gwent
Conwy
Cheshire
Ceredigion
Carms
W Yorks
W Sussex
Worcs
W Midlands
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
N Somer S Glos
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
Beds
Avon
land
Wales
land
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
162
0.73 %
12
7.41 %
145
89.51 %
9
5.56 %
5
3.09 %
0
0.00 %
Corn & Scilly
PAR-PERSIS
3
1,207
5.41 %
215
17.81 %
919
76.14 %
84
6.96 %
73
6.05 %
0
0.00 %
PAR-RECUR
3
749
3.36 %
12
1.60 %
716
95.59 %
31
4.14 %
21
2.80 %
0
0.00 %
Devon
PAR-CHR
1
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
0
0.00 %
PAR-CUL-N
5
353
1.58 %
6
1.70 %
341
96.60 %
12
3.40 %
6
1.70 %
0
0.00 %
PAR-NEW-IN
1
188
0.84 %
18
9.57 %
165
87.77 %
9
4.79 %
4
2.13 %
1
0.53 %
PAR-OTHER
2
257
1.15 %
31
12.06 %
218
84.82 %
12
4.67 %
8
3.11 %
0
0.00 %
PAR-PERSIS
2
151
0.68 %
17
11.26 %
130
86.09 %
8
5.30 %
4
2.65 %
0
0.00 %
PAR-RECUR
16
2,729
12.24 %
192
7.04 %
2451
89.81 %
105
3.85 %
86
3.15 %
0
0.00 %
Dorset
PAR-RECUR
2
18
0.08 %
1
5.56 %
16
88.89 %
2
11.11 %
1
5.56 %
0
0.00 %
Gloucs
PAR-CUL-P
1
6
0.03 %
1
16.67 %
2
33.33 %
3
50.00 %
3
50.00 %
0
0.00 %
PAR-OTHER
1
32
0.14 %
1
3.13 %
30
93.75 %
1
3.13 %
1
3.13 %
0
0.00 %
PAR-PERSIS
3
1,025
4.60 %
48
4.68 %
856
83.51 %
28
2.73 %
21
2.05 %
100
9.76 %
PAR-RECUR
2
257
1.15 %
2
0.78 %
243
94.55 %
17
6.61 %
12
4.67 %
0
0.00 %
Heref
PAR-RECUR
2
434
1.95 %
21
4.84 %
402
92.63 %
14
3.23 %
11
2.53 %
0
0.00 %
N Somer S Glos
PAR-RECUR
2
25
0.11 %
1
4.00 %
23
92.00 %
1
4.00 %
1
4.00 %
0
0.00 %
Shropshire
PAR-OTHER
1
5
0.02 %
0
0.00 %
4
80.00 %
1
20.00 %
1
20.00 %
0
0.00 %
PAR-PERSIS
3
440
1.97 %
12
2.73 %
420
95.45 %
21
4.77 %
8
1.82 %
0
0.00 %
PAR-RECUR
3
853
3.83 %
44
5.16 %
789
92.50 %
27
3.17 %
20
2.34 %
0
0.00 %
Somerset excl N
PAR-CHR
1
123
0.55 %
1
0.81 %
118
95.93 %
4
3.25 %
4
3.25 %
0
0.00 %
PAR-RECUR
3
155
0.70 %
4
2.58 %
147
94.84 %
4
2.58 %
4
2.58 %
0
0.00 %
Staffs
PAR-OTHER
2
43
0.19 %
3
6.98 %
35
81.40 %
5
11.63 %
5
11.63 %
0
0.00 %
PAR-RECUR
6
1,264
5.67 %
27
2.14 %
1187
93.91 %
60
4.75 %
47
3.72 %
3
0.24 %
Wiltshire
PAR-RECUR
5
827
3.71 %
25
3.02 %
631
76.30 %
31
3.75 %
21
2.54 %
150
18.14 %
W Midlands
PAR-CHR
1
386
1.73 %
17
4.40 %
362
93.78 %
7
1.81 %
7
1.81 %
0
0.00 %
Worcs
PAR-RECUR
2
94
0.42 %
6
6.38 %
84
89.36 %
4
4.26 %
4
4.26 %
0
0.00 %
Table 2a. Summary by County for November 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 November 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - Edge
Bucks
PAR-RECUR
2
26
0.12 %
3
11.54 %
23
88.46 %
0
0.00 %
0
0.00 %
0
0.00 %
Cheshire
PAR-PERSIS
1
213
0.96 %
3
1.41 %
208
97.65 %
3
1.41 %
2
0.94 %
0
0.00 %
E Sussex
PAR-NEW-IN
1
23
0.10 %
3
13.04 %
18
78.26 %
2
8.70 %
2
8.70 %
0
0.00 %
SER-OTHER
1
35
0.16 %
0
0.00 %
33
94.29 %
2
5.71 %
2
5.71 %
0
0.00 %
Leics & Rut
PAR-NEW-IN
2
73
0.33 %
20
27.40 %
47
64.38 %
6
8.22 %
6
8.22 %
0
0.00 %
Oxon
SER-FLEXI
3
569
2.55 %
36
6.33 %
523
91.92 %
24
4.22 %
9
1.58 %
1
0.18 %
Warks
PAR-CHR
1
316
1.42 %
10
3.16 %
293
92.72 %
14
4.43 %
13
4.11 %
0
0.00 %
England - LRA
Beds
PAR-PERSIS
2
263
1.18 %
17
6.46 %
212
80.61 %
22
8.37 %
16
6.08 %
18
6.84 %
Cumbria
PAR-NEW-IN
1
6
0.03 %
1
16.67 %
5
83.33 %
0
0.00 %
0
0.00 %
0
0.00 %
Essex
PAR-NEW-IN
1
142
0.64 %
3
2.11 %
137
96.48 %
2
1.41 %
2
1.41 %
0
0.00 %
Humberside
PAR-NEW-IN
2
38
0.17 %
0
0.00 %
36
94.74 %
2
5.26 %
2
5.26 %
0
0.00 %
Lincs
PAR-NEW-IN
2
328
1.47 %
4
1.22 %
310
94.51 %
15
4.57 %
14
4.27 %
0
0.00 %
N Yorks
PAR-NEW-IN
8
970
4.35 %
14
1.44 %
908
93.61 %
53
5.46 %
36
3.71 %
12
1.24 %
W Sussex
PAR-NEW-IN
2
280
1.26 %
6
2.14 %
257
91.79 %
22
7.86 %
17
6.07 %
0
0.00 %
England
104
15067
67.60 %
837
5.56 %
13445
89.23 %
668
4.43 %
500
3.32 %
285
1.89 %
Wales - High TB
Carms
PAR-IR-SEV
5
31
0.14 %
16
51.61 %
14
45.16 %
2
6.45 %
1
3.23 %
0
0.00 %
PAR-OTHER
1
4
0.02 %
0
0.00 %
4
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
4
842
3.78 %
54
6.41 %
746
88.60 %
48
5.70 %
40
4.75 %
2
0.24 %
PAR-RAPID
10
21
0.09 %
10
47.62 %
7
33.33 %
5
23.81 %
4
19.05 %
0
0.00 %
Ceredigion
PAR-IR-EX
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
4
26
0.12 %
6
23.08 %
16
61.54 %
5
19.23 %
4
15.38 %
0
0.00 %
PAR-PERSIS
2
209
0.94 %
9
4.31 %
186
89.00 %
14
6.70 %
14
6.70 %
0
0.00 %
PAR-RAPID
3
14
0.06 %
6
42.86 %
8
57.14 %
0
0.00 %
0
0.00 %
0
0.00 %
Gwent
PAR-RECUR
1
17
0.08 %
0
0.00 %
14
82.35 %
2
11.76 %
2
11.76 %
1
5.88 %
Pembs
PAR-IR-EX
4
24
0.11 %
6
25.00 %
16
66.67 %
2
8.33 %
2
8.33 %
0
0.00 %
PAR-IR-SEV
15
101
0.45 %
41
40.59 %
59
58.42 %
1
0.99 %
1
0.99 %
0
0.00 %
PAR-PERSIS
3
334
1.50 %
34
10.18 %
282
84.43 %
22
6.59 %
18
5.39 %
0
0.00 %
PAR-RAPID
7
18
0.08 %
5
27.78 %
13
72.22 %
1
5.56 %
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 November 2023 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
4
648
2.91 %
42
6.48 %
597
92.13 %
14
2.16 %
9
1.39 %
0
0.00 %
SER-FLEXI
3
220
0.99 %
9
4.09 %
202
91.82 %
6
2.73 %
5
2.27 %
4
1.82 %
Powys
PAR-IR-EX
1
6
0.03 %
3
50.00 %
3
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
9
117
0.52 %
9
7.69 %
97
82.91 %
13
11.11 %
11
9.40 %
0
0.00 %
PAR-OTHER
1
5
0.02 %
1
20.00 %
4
80.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
5
7
0.03 %
3
42.86 %
4
57.14 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
30
0.13 %
0
0.00 %
29
96.67 %
1
3.33 %
1
3.33 %
0
0.00 %
SER-FLEXI
4
221
0.99 %
12
5.43 %
197
89.14 %
15
6.79 %
11
4.98 %
1
0.45 %
S Wales
PAR-IR-SEV
1
4
0.02 %
2
50.00 %
2
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
1
1
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
1
100.00 %
Wales - Intermediate TB
Ceredigion
PAR-OTHER
4
355
1.59 %
36
10.14 %
284
80.00 %
17
4.79 %
11
3.10 %
24
6.76 %
PAR-RAPID
1
2
0.01 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-EX
2
5
0.02 %
1
20.00 %
3
60.00 %
1
20.00 %
1
20.00 %
0
0.00 %
PAR-IR-SEV
4
5
0.02 %
1
20.00 %
3
60.00 %
1
20.00 %
1
20.00 %
0
0.00 %
PAR-NEW-IN
14
1,779
7.98 %
48
2.70 %
1634
91.85 %
100
5.62 %
79
4.44 %
18
1.01 %
PAR-PERSIS
1
100
0.45 %
9
9.00 %
86
86.00 %
5
5.00 %
5
5.00 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Powys
PAR-IR-SEV
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
6
98
0.44 %
0
0.00 %
93
94.90 %
5
5.10 %
5
5.10 %
0
0.00 %
PAR-RAPID
1
23
0.10 %
5
21.74 %
18
78.26 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Gwynedd
PAR-NEW-IN
11
1,193
5.35 %
58
4.86 %
1055
88.43 %
87
7.29 %
73
6.12 %
7
0.59 %
NE Wales
PAR-IR-SEV
1
3
0.01 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
5
328
1.47 %
7
2.13 %
305
92.99 %
19
5.79 %
14
4.27 %
2
0.61 %
Wales
144
6796
30.49 %
439
6.46 %
5985
88.07 %
386
5.68 %
312
4.59 %
60
0.88 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
2
427
1.92 %
1
0.23 %
394
92.27 %
39
9.13 %
32
7.49 %
0
0.00 %
Scotland
2
427
1.92 %
1
0.23 %
394
92.27 %
39
9.13 %
32
7.49 %
0
0.00 %
Grand Total
Sum:
250
22290
1277
19824
1093
844
345
*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
0.02 %
1
1.96 %
49
96.08 %
2
3.92 %
1
1.96 %
0
0.00 %
Avon
PAR-RECUR
34
3,699
1.80 %
146
3.95 %
3419
92.43 %
161
4.35 %
128
3.46 %
6
0.16 %
Corn & Scilly
PAR-CUL-N
3
926
0.45 %
60
6.48 %
804
86.83 %
80
8.64 %
62
6.70 %
0
0.00 %
PAR-CUL-P
1
539
0.26 %
31
5.75 %
481
89.24 %
32
5.94 %
26
4.82 %
1
0.19 %
PAR-HERD-S
1
61
0.03 %
1
1.64 %
59
96.72 %
4
6.56 %
1
1.64 %
0
0.00 %
PAR-OTHER
4
349
0.17 %
28
8.02 %
289
82.81 %
36
10.32 %
32
9.17 %
0
0.00 %
PAR-PERSIS
9
1,761
0.86 %
257
14.59 %
1392
79.05 %
129
7.33 %
112
6.36 %
0
0.00 %
PAR-RECUR
68
12,560
6.10 %
461
3.67 %
11303
89.99 %
951
7.57 %
793
6.31 %
3
0.02 %
Devon
PAR-CHR
4
525
0.26 %
17
3.24 %
481
91.62 %
43
8.19 %
27
5.14 %
0
0.00 %
PAR-CUL-N
23
3,212
1.56 %
123
3.83 %
2943
91.63 %
164
5.11 %
133
4.14 %
13
0.40 %
PAR-HERD-S
2
396
0.19 %
35
8.84 %
326
82.32 %
48
12.12 %
35
8.84 %
0
0.00 %
PAR-NEW-IN
1
188
0.09 %
18
9.57 %
165
87.77 %
9
4.79 %
4
2.13 %
1
0.53 %
PAR-OTHER
15
1,470
0.71 %
91
6.19 %
1321
89.86 %
87
5.92 %
57
3.88 %
1
0.07 %
PAR-PERSIS
7
1,251
0.61 %
57
4.56 %
1160
92.73 %
50
4.00 %
34
2.72 %
0
0.00 %
PAR-RECUR
106
16,336
7.94 %
858
5.25 %
14444
88.42 %
997
6.10 %
760
4.65 %
274
1.68 %
Dorset
PAR-OTHER
4
667
0.32 %
56
8.40 %
592
88.76 %
16
2.40 %
13
1.95 %
6
0.90 %
PAR-RECUR
16
2,719
1.32 %
191
7.02 %
2076
76.35 %
101
3.71 %
79
2.91 %
373
13.72 %
Gloucs
PAR-CUL-N
2
35
0.02 %
5
14.29 %
30
85.71 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-CUL-P
1
6
0.00 %
1
16.67 %
2
33.33 %
3
50.00 %
3
50.00 %
0
0.00 %
PAR-OTHER
1
32
0.02 %
1
3.13 %
30
93.75 %
1
3.13 %
1
3.13 %
0
0.00 %
PAR-PERSIS
3
1,025
0.50 %
48
4.68 %
856
83.51 %
28
2.73 %
21
2.05 %
100
9.76 %
PAR-RECUR
22
3,747
1.82 %
181
4.83 %
3417
91.19 %
178
4.75 %
148
3.95 %
1
0.03 %
Heref
PAR-OTHER
2
83
0.04 %
3
3.61 %
74
89.16 %
6
7.23 %
6
7.23 %
0
0.00 %
PAR-RECUR
50
8,306
4.04 %
415
5.00 %
7497
90.26 %
488
5.88 %
394
4.74 %
0
0.00 %
N Somer S Glos
PAR-RECUR
2
25
0.01 %
1
4.00 %
23
92.00 %
1
4.00 %
1
4.00 %
0
0.00 %
Shropshire
PAR-CUL-P
1
220
0.11 %
4
1.82 %
202
91.82 %
22
10.00 %
14
6.36 %
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-OTHER
2
285
0.14 %
10
3.51 %
269
94.39 %
7
2.46 %
6
2.11 %
0
0.00 %
PAR-PERSIS
11
1,281
0.62 %
57
4.45 %
1178
91.96 %
67
5.23 %
46
3.59 %
0
0.00 %
PAR-RECUR
44
5,614
2.73 %
216
3.85 %
5086
90.59 %
391
6.96 %
309
5.50 %
3
0.05 %
Somerset excl N
PAR-CHR
7
492
0.24 %
42
8.54 %
422
85.77 %
38
7.72 %
28
5.69 %
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
0.14 %
47
15.88 %
226
76.35 %
25
8.45 %
23
7.77 %
0
0.00 %
PAR-RECUR
46
6,541
3.18 %
332
5.08 %
6016
91.97 %
229
3.50 %
189
2.89 %
4
0.06 %
Staffs
PAR-CHR
7
1,562
0.76 %
57
3.65 %
1370
87.71 %
149
9.54 %
134
8.58 %
1
0.06 %
PAR-OTHER
3
81
0.04 %
4
4.94 %
72
88.89 %
5
6.17 %
5
6.17 %
0
0.00 %
PAR-PERSIS
1
235
0.11 %
5
2.13 %
208
88.51 %
23
9.79 %
22
9.36 %
0
0.00 %
PAR-RECUR
44
9,700
4.71 %
196
2.02 %
8856
91.30 %
753
7.76 %
618
6.37 %
30
0.31 %
Wiltshire
PAR-CUL-N
3
992
0.48 %
34
3.43 %
924
93.15 %
42
4.23 %
31
3.13 %
3
0.30 %
PAR-OTHER
2
221
0.11 %
5
2.26 %
181
81.90 %
43
19.46 %
34
15.38 %
1
0.45 %
PAR-PERSIS
7
1,297
0.63 %
24
1.85 %
1210
93.29 %
77
5.94 %
50
3.86 %
13
1.00 %
PAR-RECUR
33
5,042
2.45 %
173
3.43 %
4532
89.88 %
252
5.00 %
181
3.59 %
156
3.09 %
W Midlands
PAR-CHR
1
386
0.19 %
17
4.40 %
362
93.78 %
7
1.81 %
7
1.81 %
0
0.00 %
PAR-RECUR
1
144
0.07 %
0
0.00 %
137
95.14 %
17
11.81 %
7
4.86 %
0
0.00 %
Worcs
PAR-RECUR
2
94
0.05 %
6
6.38 %
84
89.36 %
4
4.26 %
4
4.26 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
6
937
0.46 %
17
1.81 %
867
92.53 %
58
6.19 %
53
5.66 %
0
0.00 %
PAR-RECUR
1
132
0.06 %
2
1.52 %
118
89.39 %
13
9.85 %
11
8.33 %
1
0.76 %
Bucks
PAR-CUL-N
1
191
0.09 %
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
1.62 %
109
3.26 %
3038
90.88 %
161
4.82 %
134
4.01 %
62
1.85 %
PAR-RECUR
9
446
0.22 %
21
4.71 %
393
88.12 %
26
5.83 %
20
4.48 %
12
2.69 %
Cheshire
PAR-CUL-N
5
768
0.37 %
21
2.73 %
718
93.49 %
36
4.69 %
29
3.78 %
0
0.00 %
PAR-OTHER
4
748
0.36 %
44
5.88 %
686
91.71 %
20
2.67 %
18
2.41 %
0
0.00 %
PAR-PERSIS
20
3,159
1.53 %
62
1.96 %
2917
92.34 %
205
6.49 %
172
5.44 %
8
0.25 %
PAR-RECUR
4
429
0.21 %
4
0.93 %
408
95.10 %
22
5.13 %
17
3.96 %
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
%
Derbyshire
PAR-NEW-IN
14
778
0.38 %
41
5.27 %
682
87.66 %
65
8.35 %
55
7.07 %
0
0.00 %
PAR-RECUR
10
2,136
1.04 %
60
2.81 %
1954
91.48 %
144
6.74 %
122
5.71 %
0
0.00 %
E Sussex
PAR-NEW-IN
31
2,669
1.30 %
115
4.31 %
2411
90.33 %
179
6.71 %
141
5.28 %
2
0.07 %
SER-OTHER
1
35
0.02 %
0
0.00 %
33
94.29 %
2
5.71 %
2
5.71 %
0
0.00 %
Hampshire
PAR-NEW-IN
9
1,275
0.62 %
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
24
2,867
1.39 %
94
3.28 %
2646
92.29 %
147
5.13 %
127
4.43 %
0
0.00 %
PAR-RECUR
1
135
0.07 %
11
8.15 %
120
88.89 %
7
5.19 %
4
2.96 %
0
0.00 %
Northants
PAR-NEW-IN
11
1,176
0.57 %
25
2.13 %
951
80.87 %
95
8.08 %
81
6.89 %
119
10.12 %
PAR-RECUR
2
408
0.20 %
6
1.47 %
374
91.67 %
32
7.84 %
28
6.86 %
0
0.00 %
Notts
PAR-NEW-IN
9
553
0.27 %
13
2.35 %
501
90.60 %
60
10.85 %
37
6.69 %
2
0.36 %
Oxon
PAR-NEW-IN
6
429
0.21 %
8
1.86 %
398
92.77 %
28
6.53 %
23
5.36 %
0
0.00 %
PAR-PERSIS
3
976
0.47 %
39
4.00 %
895
91.70 %
57
5.84 %
42
4.30 %
0
0.00 %
PAR-RECUR
19
2,221
1.08 %
80
3.60 %
2029
91.36 %
145
6.53 %
110
4.95 %
2
0.09 %
SER-FLEXI
5
624
0.30 %
39
6.25 %
571
91.51 %
28
4.49 %
13
2.08 %
1
0.16 %
Warks
PAR-CHR
1
316
0.15 %
10
3.16 %
293
92.72 %
14
4.43 %
13
4.11 %
0
0.00 %
PAR-NEW-IN
7
683
0.33 %
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
13
318
0.15 %
9
2.83 %
222
69.81 %
27
8.49 %
23
7.23 %
64
20.13 %
England - LRA
Beds
PAR-PERSIS
2
263
0.13 %
17
6.46 %
212
80.61 %
22
8.37 %
16
6.08 %
18
6.84 %
Cumbria
PAR-NEW-IN
24
4,226
2.05 %
179
4.24 %
3789
89.66 %
287
6.79 %
250
5.92 %
8
0.19 %
PAR-OTHER
2
223
0.11 %
0
0.00 %
206
92.38 %
20
8.97 %
17
7.62 %
0
0.00 %
Essex
PAR-NEW-IN
7
547
0.27 %
10
1.83 %
353
64.53 %
9
1.65 %
7
1.28 %
177
32.36 %
Gr Manchester
PAR-NEW-IN
2
253
0.12 %
5
1.98 %
219
86.56 %
32
12.65 %
28
11.07 %
1
0.40 %
PAR-PERSIS
4
70
0.03 %
0
0.00 %
63
90.00 %
8
11.43 %
7
10.00 %
0
0.00 %
Herts
PAR-NEW-IN
2
153
0.07 %
0
0.00 %
149
97.39 %
7
4.58 %
4
2.61 %
0
0.00 %
PAR-RECUR
1
79
0.04 %
2
2.53 %
76
96.20 %
3
3.80 %
1
1.27 %
0
0.00 %
Humberside
PAR-NEW-IN
6
415
0.20 %
3
0.72 %
352
84.82 %
80
19.28 %
58
13.98 %
2
0.48 %
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
%
Lancashire
PAR-NEW-IN
3
409
0.20 %
4
0.98 %
374
91.44 %
32
7.82 %
31
7.58 %
0
0.00 %
Lincs
PAR-NEW-IN
13
1,612
0.78 %
31
1.92 %
1467
91.00 %
124
7.69 %
114
7.07 %
0
0.00 %
Northumb
PAR-NEW-IN
2
42
0.02 %
1
2.38 %
33
78.57 %
7
16.67 %
6
14.29 %
2
4.76 %
N Yorks
PAR-NEW-IN
20
2,488
1.21 %
32
1.29 %
2325
93.45 %
130
5.23 %
100
4.02 %
31
1.25 %
Surrey
PAR-NEW-IN
7
869
0.42 %
24
2.76 %
694
79.86 %
58
6.67 %
53
6.10 %
98
11.28 %
W Sussex
PAR-NEW-IN
5
898
0.44 %
15
1.67 %
727
80.96 %
170
18.93 %
156
17.37 %
0
0.00 %
W Yorks
PAR-NEW-IN
3
117
0.06 %
0
0.00 %
106
90.60 %
12
10.26 %
9
7.69 %
2
1.71 %
England
946
134916
65.56 %
5545
4.11 %
120941
89.64 %
8460
6.27 %
6806
5.04 %
1624
1.20 %
Wales - High TB
Carms
PAR-IR-EX
12
52
0.03 %
13
25.00 %
37
71.15 %
2
3.85 %
2
3.85 %
0
0.00 %
PAR-IR-SEV
53
380
0.18 %
125
32.89 %
237
62.37 %
22
5.79 %
18
4.74 %
0
0.00 %
PAR-OTHER
7
306
0.15 %
6
1.96 %
272
88.89 %
33
10.78 %
28
9.15 %
0
0.00 %
PAR-PERSIS
28
2,565
1.25 %
120
4.68 %
2312
90.14 %
155
6.04 %
121
4.72 %
12
0.47 %
PAR-RAPID
70
192
0.09 %
62
32.29 %
119
61.98 %
13
6.77 %
10
5.21 %
1
0.52 %
PAR-RECUR
12
663
0.32 %
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
0.57 %
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
14
53
0.03 %
10
18.87 %
38
71.70 %
5
9.43 %
5
9.43 %
0
0.00 %
PAR-IR-SEV
31
225
0.11 %
49
21.78 %
165
73.33 %
16
7.11 %
11
4.89 %
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
8
1,082
0.53 %
42
3.88 %
1002
92.61 %
42
3.88 %
36
3.33 %
2
0.18 %
PAR-RAPID
23
55
0.03 %
16
29.09 %
36
65.45 %
2
3.64 %
2
3.64 %
1
1.82 %
PAR-RECUR
3
147
0.07 %
6
4.08 %
137
93.20 %
3
2.04 %
3
2.04 %
1
0.68 %
SER-FLEXI
10
533
0.26 %
88
16.51 %
421
78.99 %
38
7.13 %
24
4.50 %
0
0.00 %
Gwent
PAR-IR-EX
4
28
0.01 %
17
60.71 %
11
39.29 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
10
50
0.02 %
15
30.00 %
32
64.00 %
3
6.00 %
3
6.00 %
0
0.00 %
PAR-OTHER
4
15
0.01 %
4
26.67 %
11
73.33 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
196
0.10 %
8
4.08 %
176
89.80 %
19
9.69 %
12
6.12 %
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-RAPID
26
57
0.03 %
8
14.04 %
44
77.19 %
7
12.28 %
5
8.77 %
0
0.00 %
PAR-RECUR
10
801
0.39 %
34
4.24 %
717
89.51 %
77
9.61 %
48
5.99 %
2
0.25 %
SER-FLEXI
15
1,504
0.73 %
64
4.26 %
1375
91.42 %
77
5.12 %
56
3.72 %
9
0.60 %
Monmouthshire and
newport
PAR-RAPID
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
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
53
243
0.12 %
75
30.86 %
155
63.79 %
14
5.76 %
12
4.94 %
1
0.41 %
PAR-IR-SEV
192
1,507
0.73 %
415
27.54 %
1014
67.29 %
94
6.24 %
65
4.31 %
13
0.86 %
PAR-OTHER
8
188
0.09 %
13
6.91 %
155
82.45 %
29
15.43 %
20
10.64 %
0
0.00 %
PAR-PERSIS
61
5,577
2.71 %
298
5.34 %
4963
88.99 %
405
7.26 %
300
5.38 %
16
0.29 %
PAR-RAPID
101
292
0.14 %
57
19.52 %
222
76.03 %
18
6.16 %
12
4.11 %
1
0.34 %
PAR-RECUR
32
2,895
1.41 %
130
4.49 %
2593
89.57 %
168
5.80 %
132
4.56 %
40
1.38 %
SER-FLEXI
49
4,038
1.96 %
149
3.69 %
3682
91.18 %
260
6.44 %
186
4.61 %
21
0.52 %
Powys
PAR-IR-EX
10
61
0.03 %
19
31.15 %
40
65.57 %
2
3.28 %
2
3.28 %
0
0.00 %
PAR-IR-SEV
33
283
0.14 %
39
13.78 %
220
77.74 %
31
10.95 %
23
8.13 %
1
0.35 %
PAR-NEW-IN
2
152
0.07 %
13
8.55 %
131
86.18 %
10
6.58 %
8
5.26 %
0
0.00 %
PAR-OTHER
4
44
0.02 %
4
9.09 %
35
79.55 %
6
13.64 %
5
11.36 %
0
0.00 %
PAR-PERSIS
9
1,379
0.67 %
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
38
62
0.03 %
10
16.13 %
49
79.03 %
4
6.45 %
3
4.84 %
0
0.00 %
PAR-RECUR
17
570
0.28 %
24
4.21 %
470
82.46 %
83
14.56 %
73
12.81 %
3
0.53 %
SER-FLEXI
14
2,850
1.38 %
77
2.70 %
2634
92.42 %
129
4.53 %
109
3.82 %
30
1.05 %
S Wales
PAR-IR-SEV
3
25
0.01 %
14
56.00 %
11
44.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
3
207
0.10 %
8
3.86 %
191
92.27 %
10
4.83 %
8
3.86 %
0
0.00 %
PAR-RAPID
3
3
0.00 %
1
33.33 %
1
33.33 %
0
0.00 %
0
0.00 %
1
33.33 %
PAR-RECUR
2
63
0.03 %
4
6.35 %
44
69.84 %
16
25.40 %
15
23.81 %
0
0.00 %
W Glamorgan
PAR-OTHER
4
121
0.06 %
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
0.12 %
43
17.00 %
195
77.08 %
15
5.93 %
14
5.53 %
1
0.40 %
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-RAPID
10
15
0.01 %
6
40.00 %
8
53.33 %
1
6.67 %
1
6.67 %
0
0.00 %
PAR-RECUR
7
493
0.24 %
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-OTHER
4
355
0.17 %
36
10.14 %
284
80.00 %
17
4.79 %
11
3.10 %
24
6.76 %
PAR-PERSIS
2
341
0.17 %
45
13.20 %
271
79.47 %
29
8.50 %
25
7.33 %
0
0.00 %
PAR-RAPID
4
20
0.01 %
11
55.00 %
9
45.00 %
1
5.00 %
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
4
6
0.00 %
2
33.33 %
3
50.00 %
1
16.67 %
1
16.67 %
0
0.00 %
NE Wales
PAR-IR-EX
32
93
0.05 %
19
20.43 %
65
69.89 %
11
11.83 %
9
9.68 %
0
0.00 %
PAR-IR-SEV
43
319
0.16 %
56
17.55 %
252
79.00 %
15
4.70 %
11
3.45 %
0
0.00 %
PAR-NEW-IN
90
7,922
3.85 %
177
2.23 %
7228
91.24 %
562
7.09 %
466
5.88 %
51
0.64 %
PAR-OTHER
1
9
0.00 %
2
22.22 %
7
77.78 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
14
1,111
0.54 %
22
1.98 %
1009
90.82 %
105
9.45 %
79
7.11 %
1
0.09 %
PAR-POSTM
12
65
0.03 %
6
9.23 %
56
86.15 %
4
6.15 %
3
4.62 %
0
0.00 %
PAR-RAPID
23
44
0.02 %
11
25.00 %
32
72.73 %
1
2.27 %
1
2.27 %
0
0.00 %
PAR-RECUR
5
129
0.06 %
3
2.33 %
106
82.17 %
29
22.48 %
20
15.50 %
0
0.00 %
SER-FLEXI
4
86
0.04 %
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
5
10
0.00 %
3
30.00 %
6
60.00 %
1
10.00 %
1
10.00 %
0
0.00 %
PAR-NEW-IN
20
1,915
0.93 %
35
1.83 %
1746
91.17 %
134
7.00 %
112
5.85 %
22
1.15 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
299
0.15 %
13
4.35 %
270
90.30 %
19
6.35 %
16
5.35 %
0
0.00 %
PAR-RAPID
3
52
0.03 %
8
15.38 %
44
84.62 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
128
0.06 %
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
0.11 %
0
0.00 %
208
95.85 %
13
5.99 %
8
3.69 %
1
0.46 %
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
%
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
118
8,449
4.11 %
240
2.84 %
7639
90.41 %
682
8.07 %
537
6.36 %
33
0.39 %
PAR-OTHER
2
11
0.01 %
1
9.09 %
7
63.64 %
3
27.27 %
3
27.27 %
0
0.00 %
PAR-PERSIS
3
40
0.02 %
0
0.00 %
38
95.00 %
4
10.00 %
2
5.00 %
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
0.14 %
10
3.44 %
267
91.75 %
18
6.19 %
13
4.47 %
1
0.34 %
NE Wales
PAR-IR-EX
4
9
0.00 %
2
22.22 %
7
77.78 %
1
11.11 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
5
16
0.01 %
5
31.25 %
11
68.75 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
71
5,727
2.78 %
116
2.03 %
4994
87.20 %
596
10.41 %
375
6.55 %
242
4.23 %
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
0.00 %
0
0.00 %
8
88.89 %
1
11.11 %
1
11.11 %
0
0.00 %
SER-FLEXI
4
165
0.08 %
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
1553
59406
28.87 %
3125
5.26 %
52461
88.31 %
4277
7.20 %
3240
5.45 %
580
0.98 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
2
427
0.21 %
1
0.23 %
394
92.27 %
39
9.13 %
32
7.49 %
0
0.00 %
Ayrshire
PAR-NEW-IN
22
2,289
1.11 %
96
4.19 %
1957
85.50 %
271
11.84 %
231
10.09 %
5
0.22 %
Kirkcudbright
PAR-CUL-N
1
9
0.00 %
0
0.00 %
8
88.89 %
1
11.11 %
1
11.11 %
0
0.00 %
PAR-NEW-IN
26
4,826
2.34 %
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
0.06 %
6
4.65 %
119
92.25 %
5
3.88 %
4
3.10 %
0
0.00 %
PAR-NEW-IN
6
662
0.32 %
9
1.36 %
633
95.62 %
19
2.87 %
17
2.57 %
3
0.45 %
West lothian
PAR-NEW-IN
9
797
0.39 %
31
3.89 %
640
80.30 %
61
7.65 %
58
7.28 %
68
8.53 %
Wigtown
PAR-NEW-IN
29
2,339
1.14 %
124
5.30 %
2003
85.63 %
232
9.92 %
209
8.94 %
3
0.13 %
Scotland
98
11482
5.58 %
463
4.03 %
10100
87.96 %
959
8.35 %
840
7.32 %
79
0.69 %
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
%
Grand Total
Sum:
xx-xxxx-xxxx
9133
183502
13696
10886
2283
*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 November 2023
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
100
14463
96.0%
801
5.5%
12889
89.1%
642
4.4%
489
3.4%
284
2.0%
Serial/Extended
4
604
4.0%
36
6.0%
556
92.1%
26
4.3%
11
1.8%
1
0.2%
Total
104
15067
100.0%
837
5.6%
13445
89.2%
668
4.4%
500
3.3%
285
1.9%
Scotland
Parallel
2
427
100.0%
1
0.2%
394
92.3%
39
9.1%
32
7.5%
0
0.0 %
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
2
427
100.0%
1
0.2%
394
92.3%
39
9.1%
32
7.5%
0
0.0 %
Wales
Parallel
137
6355
93.5%
418
6.6%
5586
87.9%
365
5.7%
296
4.7%
55
0.9%
Serial/Extended
7
441
6.5%
21
4.8%
399
90.5%
21
4.8%
16
3.6%
5
1.1%
Total
144
6796
100.0%
439
6.5%
5985
88.1%
386
5.7%
312
4.6%
60
0.9%
GB
Parallel
239
21245
95.3%
1220
5.7%
18869
88.8%
1046
4.9%
817
3.8%
339
1.6%
Serial/Extended
11
1045
4.7%
57
5.5%
955
91.4%
47
4.5%
27
2.6%
6
0.6%
Total
250
22290
100.0%
1277
5.7%
19824
88.9%
1093
4.9%
844
3.8%
345
1.5%
104.00
144.00
2.00
* 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
940 134257
99.5%
5506
4.1% 120337
89.6%
8430
6.3%
6791
5.1%
1623
1.2%
Serial/Extended
6
659
0.5%
39
5.9%
604
91.7%
30
4.6%
15
2.3%
1
0.2%
Total
946 134916
100.0%
5545
4.1% 120941
89.6%
8460
6.3%
6806
5.0%
1624
1.2%
Scotland
Parallel
97
11480
100.0%
463
4.0%
10098
88.0%
958
8.3%
840
7.3%
79
0.7%
Serial/Extended
1
2
0.0%
0
0.0 %
2 100.0%
1
50.0%
0
0.0 %
0
0.0 %
Total
98
11482
100.0%
463
4.0%
10100
88.0%
959
8.4%
840
7.3%
79
0.7%
Wales
Parallel
1437
49029
82.5%
2658
5.4%
43051
87.8%
3695
7.5%
2803
5.7%
517
1.1%
Serial/Extended
116
10377
17.5%
467
4.5%
9410
90.7%
582
5.6%
437
4.2%
63
0.6%
Total
1553
59406
100.0%
3125
5.3%
52461
88.3%
4277
7.2%
3240
5.5%
580
1.0%
GB
Parallel
xx-xxxx-xxxx
94.6%
8627
4.4% 173486
89.1%
13083
6.7%
10434
5.4%
2219
1.1%
Serial/Extended
123
11038
5.4%
506
4.6%
10016
90.7%
613
5.6%
452
4.1%
64
0.6%
Total
xx-xxxx-xxxx
100.0%
9133
4.4% 183502
89.2%
13696
6.7%
10886
5.3%
2283
1.1%
946.00
#######
98.00
* 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
10
1010
4.5%
57
5.6%
922
91.3%
45
4.5 %
25
2.5 %
6
0.6 %
Parallel – chronic breakdown
4
827
3.7%
28
3.4%
774
93.6%
26
3.1 %
25
3.0 %
0
Parallel - IRs in Exit Strategy for persistent her
8
37
0.2%
10
27.0%
24
64.9%
3
8.1 %
3
8.1 %
0
Parallel New Infection
58
5873
26.3%
183
3.1%
5364
91.3%
361
6.1 %
286
4.9 %
40
0.7 %
Parallel - new infection cull area
5
353
1.6%
6
1.7%
341
96.6%
12
3.4 %
6
1.7 %
0
Parallel - Other
12
701
3.1%
72
10.3%
579
82.6%
36
5.1 %
26
3.7 %
24
3.4 %
Parallel Persistent Infection
24
4784
21.5%
418
8.7%
4045
84.6%
255
5.3 %
201
4.2 %
120
2.5 %
Parallel - persistent infection cull area
1
6
0.0%
1
16.7%
2
33.3%
3
50.0 %
3
50.0 %
0
Parallel - Rapid Testing Two-times IRs
29
88
0.4%
33
37.5%
50
56.8%
6
6.8 %
4
4.5 %
1
1.1 %
Parallel - Recurrent breakdowns
58
8288
37.2%
392
4.7%
7497
90.5%
322
3.9 %
245
3.0 %
154
1.9 %
Parallel - severe IRs - in persistent herds
40
288
1.3%
77
26.7%
193
67.0%
22
7.6 %
18
6.3 %
0
Serial - Other
1
35
0.2%
0
0.0 %
33
94.3%
2
5.7 %
2
5.7 %
0
Total
250
22290
100.0%
1277
5.7%
19824
88.9%
1093
4.9 %
844
3.8 %
345
1.5 %
Table 4a. Summaryof IFN Gamma results by submission reason (November 2023)
England - HRA
Parallel – chronic breakdown
3
511
2.3%
18
3.5%
481
94.1%
12
2.3 %
12
2.3 %
0
Parallel New Infection
1
188
0.8%
18
9.6%
165
87.8%
9
4.8 %
4
2.1 %
1
0.5 %
Parallel - new infection cull area
5
353
1.6%
6
1.7%
341
96.6%
12
3.4 %
6
1.7 %
0
Parallel - Other
6
337
1.5%
35
10.4%
287
85.2%
19
5.6 %
15
4.5 %
0
Parallel Persistent Infection
11
2823
12.7%
292
10.3%
2325
82.4%
141
5.0 %
106
3.8 %
100
3.5 %
Parallel - persistent infection cull area
1
6
0.0%
1
16.7%
2
33.3%
3
50.0 %
3
50.0 %
0
Parallel - Recurrent breakdowns
48
7567
33.9%
347
4.6%
6834
90.3%
305
4.0 %
233
3.1 %
153
2.0 %
England - HRA
75
11785
52.9%
717
6.1%
10435
88.5%
501
4.3 %
379
3.2 %
254
2.2 %
England - Edge
Extended Flexible IFN-GAMMA test
3
569
2.6%
36
6.3%
523
91.9%
24
4.2 %
9
1.6 %
1
0.2 %
Parallel – chronic breakdown
1
316
1.4%
10
3.2%
293
92.7%
14
4.4 %
13
4.1 %
0
Parallel New Infection
3
96
0.4%
23
24.0%
65
67.7%
8
8.3 %
8
8.3 %
0
Parallel Persistent Infection
1
213
1.0%
3
1.4%
208
97.7%
3
1.4 %
2
0.9 %
0
Parallel - Recurrent breakdowns
2
26
0.1%
3
11.5%
23
88.5%
0
0
0
Serial - Other
1
35
0.2%
0
0.0 %
33
94.3%
2
5.7 %
2
5.7 %
0
England - Edge
11
1255
5.6%
75
6.0%
1145
91.2%
51
4.1 %
34
2.7 %
1
0.1 %
England - LRA
Parallel New Infection
16
1764
7.9%
28
1.6%
1653
93.7%
94
5.3 %
71
4.0 %
12
0.7 %
Parallel Persistent Infection
2
263
1.2%
17
6.5%
212
80.6%
22
8.4 %
16
6.1 %
18
6.8 %
England - LRA
18
2027
9.1%
45
2.2%
1865
92.0%
116
5.7 %
87
4.3 %
30
1.5 %
Wales - High TB
Extended Flexible IFN-GAMMA test
7
441
2.0%
21
4.8%
399
90.5%
21
4.8 %
16
3.6 %
5
1.1 %
Parallel - IRs in Exit Strategy for persistent her
6
32
0.1%
9
28.1%
21
65.6%
2
6.3 %
2
6.3 %
0
Parallel - Other
2
9
0.0%
1
11.1%
8
88.9%
0
0
0
Parallel Persistent Infection
9
1385
6.2%
97
7.0%
1214
87.7%
84
6.1 %
72
5.2 %
2
0.1 %
Parallel - Rapid Testing Two-times IRs
26
61
0.3%
24
39.3%
32
52.5%
6
9.8 %
4
6.6 %
1
1.6 %
Parallel - Recurrent breakdowns
8
695
3.1%
42
6.0%
640
92.1%
17
2.4 %
12
1.7 %
1
0.1 %
Parallel - severe IRs - in persistent herds
34
279
1.3%
74
26.5%
188
67.4%
21
7.5 %
17
6.1 %
0
Wales - High TB
92
2902
13.0%
268
9.2%
2502
86.2%
151
5.2 %
123
4.2 %
9
0.3 %
Wales - Intermediate TB
Parallel - IRs in Exit Strategy for persistent her
2
5
0.0%
1
20.0%
3
60.0%
1
20.0 %
1
20.0 %
0
Parallel New Infection
20
1877
8.4%
48
2.6%
1727
92.0%
105
5.6 %
84
4.5 %
18
1.0 %
Parallel - Other
4
355
1.6%
36
10.1%
284
80.0%
17
4.8 %
11
3.1 %
24
6.8 %
Parallel Persistent Infection
1
100
0.4%
9
9.0%
86
86.0%
5
5.0 %
5
5.0 %
0
Parallel - Rapid Testing Two-times IRs
3
27
0.1%
9
33.3%
18
66.7%
0
0
0
Parallel - severe IRs - in persistent herds
5
6
0.0%
2
33.3%
3
50.0%
1
16.7 %
1
16.7 %
0
Wales - Intermediate TB
35
2370
10.6%
105
4.4%
2121
89.5%
129
5.4 %
102
4.3 %
42
1.8 %
Wales - Low TB
Parallel New Infection
16
1521
6.8%
65
4.3%
1360
89.4%
106
7.0 %
87
5.7 %
9
0.6 %
Parallel - severe IRs - in persistent herds
1
3
0.0%
1
33.3%
2
66.7%
0
0
0
Wales - Low TB
17
1524
6.8%
66
4.3%
1362
89.4%
106
7.0 %
87
5.7 %
9
0.6 %
Scotland - Scotland
Parallel New Infection
2
427
1.9%
1
0.2%
394
92.3%
39
9.1 %
32
7.5 %
0
Scotland - Scotland
2
427
1.9%
1
0.2%
394
92.3%
39
9.1 %
32
7.5 %
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
116
10970
5.3%
506
4.6%
9953
90.7%
607
5.5 %
447
4.1 %
64
0.6 %
Parallel – chronic breakdown
20
3281
1.6%
143
4.4%
2928
89.2%
251
7.7 %
209
6.4 %
1
0.0 %
Parallel - Herd or Group Slaughter
6
461
0.2%
36
7.8%
388
84.2%
54
11.7 %
37
8.0 %
0
Parallel - IRs in Exit Strategy for persistent herds
134
573
0.3%
164
28.6%
374
65.3%
38
6.6 %
33
5.8 %
2
0.3 %
Parallel New Infection
637
62685
30.5%
1854
3.0%
55998
89.3%
4809
7.7 %
3895
6.2 %
938
1.5 %
Parallel - new infection cull area
39
6262
3.0%
252
4.0%
5728
91.5%
334
5.3 %
266
4.2 %
16
0.3 %
Parallel - Other
82
5496
2.7%
360
6.6%
4797
87.3%
365
6.6 %
286
5.2 %
53
1.0 %
Parallel Persistent Infection
203
24416
11.9%
1200
4.9%
21838
89.4%
1516
6.2 %
1172
4.8 %
206
0.8 %
Parallel - persistent infection cull area
3
765
0.4%
36
4.7%
685
89.5%
57
7.5 %
43
5.6 %
1
0.1 %
Parallel – post-mvt test coupled with IDEXX anti
27
94
0.0%
11
11.7%
80
85.1%
5
5.3 %
3
3.2 %
0
Parallel - Rapid Testing Two-times IRs
316
819
0.4%
194
23.7%
585
71.4%
49
6.0 %
36
4.4 %
4
0.5 %
Parallel - Recurrent breakdowns
626
87078
42.3%
3646
4.2%
78127
89.7%
5422
6.2 %
4321
5.0 %
984
1.1 %
Parallel - severe IRs - in persistent herds
381
2836
1.4%
731
25.8%
1958
69.0%
183
6.5 %
133
4.7 %
14
0.5 %
Serial - Anomalous Reaction
1
14
0.0%
0
0.0 %
13
92.9%
1
7.1 %
1
7.1 %
0
Serial - Other
2
37
0.0%
0
0.0 %
35
94.6%
3
8.1 %
2
5.4 %
0
Total
xx-xxxx-xxxx
100.0%
9133
4.4%
183502
89.2%
13696
6.7 %
10886
5.3 %
2283
1.1 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2023)
England - HRA
Parallel – chronic breakdown
19
2965
1.4%
133
4.5%
2635
88.9%
237
8.0 %
196
6.6 %
1
0.0 %
Parallel - Herd or Group Slaughter
3
457
0.2%
36
7.9%
385
84.2%
52
11.4 %
36
7.9 %
0
Parallel New Infection
1
188
0.1%
18
9.6%
165
87.8%
9
4.8 %
4
2.1 %
1
0.5 %
Parallel - new infection cull area
31
5165
2.5%
222
4.3%
4701
91.0%
286
5.5 %
226
4.4 %
16
0.3 %
Parallel - Other
35
3200
1.6%
200
6.3%
2837
88.7%
203
6.3 %
155
4.8 %
8
0.3 %
Parallel Persistent Infection
40
7146
3.5%
495
6.9%
6230
87.2%
399
5.6 %
308
4.3 %
113
1.6 %
Parallel - persistent infection cull area
3
765
0.4%
36
4.7%
685
89.5%
57
7.5 %
43
5.6 %
1
0.1 %
Parallel - Recurrent breakdowns
469
74578
36.2%
3177
4.3%
66939
89.8%
4525
6.1 %
3612
4.8 %
850
1.1 %
England - Edge
Extended Flexible IFN-GAMMA test
5
624
0.3%
39
6.3%
571
91.5%
28
4.5 %
13
2.1 %
1
0.2 %
Parallel – chronic breakdown
1
316
0.2%
10
3.2%
293
92.7%
14
4.4 %
13
4.1 %
0

Table 4b. Summary of IFN Gamma results by submission reason (Total 2023) Cont.
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
140
14710
7.1%
494
3.4%
13298
90.4%
897
6.1 %
730
5.0 %
188
1.3 %
Parallel - new infection cull area
6
959
0.5%
24
2.5%
900
93.8%
42
4.4 %
35
3.6 %
0
Parallel - Other
5
767
0.4%
44
5.7%
686
89.4%
20
2.6 %
18
2.3 %
19
2.5 %
Parallel Persistent Infection
23
4135
2.0%
101
2.4%
3812
92.2%
262
6.3 %
214
5.2 %
8
0.2 %
Parallel - Recurrent breakdowns
60
6241
3.0%
193
3.1%
5626
90.1%
425
6.8 %
343
5.5 %
79
1.3 %
Serial - Other
1
35
0.0%
0
0.0 %
33
94.3%
2
5.7 %
2
5.7 %
0
England - LRA
Parallel New Infection
94
12029
5.8%
304
2.5%
10588
88.0%
948
7.9 %
816
6.8 %
321
2.7 %
Parallel - Other
2
223
0.1%
0
0.0 %
206
92.4%
20
9.0 %
17
7.6 %
0
Parallel Persistent Infection
6
333
0.2%
17
5.1%
275
82.6%
30
9.0 %
23
6.9 %
18
5.4 %
Parallel - Recurrent breakdowns
1
79
0.0%
2
2.5%
76
96.2%
3
3.8 %
1
1.3 %
0
England
946 134916
65.6%
5545
4.1%
120941
89.6%
8460
6.3 %
6806
5.0 %
1624
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
103
10095
4.9%
449
4.4%
9169
90.8%
557
5.5 %
414
4.1 %
63
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
93
437
0.2%
134
30.7%
281
64.3%
23
5.3 %
21
4.8 %
1
0.2 %
Parallel New Infection
2
152
0.1%
13
8.6%
131
86.2%
10
6.6 %
8
5.3 %
0
Parallel - Other
28
675
0.3%
34
5.0%
572
84.7%
87
12.9 %
68
10.1 %
1
0.1 %
Parallel Persistent Infection
111
11006
5.3%
507
4.6%
9928
90.2%
667
6.1 %
505
4.6 %
66
0.6 %
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
262
662
0.3%
154
23.3%
472
71.3%
44
6.6 %
32
4.8 %
4
0.6 %
Parallel - Recurrent breakdowns
76
5139
2.5%
238
4.6%
4553
88.6%
382
7.4 %
299
5.8 %
49
1.0 %
Parallel - severe IRs - in persistent herds
322
2470
1.2%
657
26.6%
1679
68.0%
166
6.7 %
120
4.9 %
14
0.6 %
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
0.0%
6
7.0%
75
87.2%
5
5.8 %
5
5.8 %
0
Parallel - IRs in Exit Strategy for persistent herd
37
127
0.1%
28
22.0%
86
67.7%
14
11.0 %
12
9.4 %
1
0.8 %
Parallel New Infection
112
9849
4.8%
212
2.2%
8983
91.2%
701
7.1 %
581
5.9 %
73
0.7 %
Parallel - Other
9
618
0.3%
81
13.1%
487
78.8%
32
5.2 %
25
4.0 %
25
4.0 %
Parallel Persistent Infection
20
1756
0.9%
80
4.6%
1555
88.6%
154
8.8 %
120
6.8 %
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
48
145
0.1%
39
26.9%
103
71.0%
4
2.8 %
3
2.1 %
0
Parallel - Recurrent breakdowns
15
750
0.4%
26
3.5%
666
88.8%
69
9.2 %
53
7.1 %
5
0.7 %
Parallel - severe IRs - in persistent herds
51
344
0.2%
69
20.1%
263
76.5%
16
4.7 %
12
3.5 %
0

Table 4b. Summary of IFN Gamma results by submission reason (Total 2023) Cont.
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
4
9
0.0%
2
22.2%
7
77.8%
1
11.1 %
0
0
Parallel New Infection
194
14417
7.0%
356
2.5%
12864
89.2%
1292
9.0 %
921
6.4 %
276
1.9 %
Parallel - Other
2
11
0.0%
1
9.1%
7
63.6%
3
27.3 %
3
27.3 %
0
Parallel Persistent Infection
3
40
0.0%
0
0.0 %
38
95.0%
4
10.0 %
2
5.0 %
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
0.1%
10
3.4%
267
91.8%
18
6.2 %
13
4.5 %
1
0.3 %
Parallel - severe IRs - in persistent herds
8
22
0.0%
5
22.7%
16
72.7%
1
4.5 %
1
4.5 %
0
Wales
1553
59406
28.9%
3125
5.3%
52461
88.3%
4277
7.2 %
3240
5.5 %
580
1.0 %
Scotland - Scotland
Parallel New Infection
94
11340
5.5%
457
4.0%
9969
87.9%
952
8.4 %
835
7.4 %
79
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
98
11482
5.6%
463
4.0%
10100
88.0%
959
8.4 %
840
7.3 %
79
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 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
4
0
0
0
0
44
2
0
2
0
493
0
37
0
0
June
189
xx-xxxx-xxxx
94
524
2
0
0
0
0
33
2
0
9
0
447
0
31
0
0
July
209
18470
108
597
15
0
0
0
0
81
4
0
10
0
438
0
47
1
0
August
252
20681
140
867
7
0
0
0
0
95
2
1
19
3
675
1
64
0
0
September
221
18070
112
638
10
0
0
0
0
52
0
7
6
1
503
26
29
1
1
October
253
18656
139
825
1
29
0
0
0
0
49
0
11
0
0
684
51
0
0
0
November
250
22290
157
1277
529
283
0
0
0
0
2
0
0
0
0
31
1
0
0
0
Totals (last
12 months)
2797
219539
1571
9678
531
421
0
0
0
0
663
21
23
126
4
6798
81
562
5
5
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
1003
143253
676
5781
269
0
0
0
0
525
10
9
48
2
4244
1
29
2
1
Scotland
104
12046
61
468
2
0
0
0
0
109
1
0
28
0
263
16
44
1
0
Wales
xx-xxxx-xxxx
64240
834
3429
150
0
0
0
0
29
10
14
50
2
2291
64
489
2
4
Totals
2797
219539
1571
9678
421
0
0
0
0
663
21
23
126
4
6798
81
562
5
5
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
114
139
93
157
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
October
November
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
17659
825
20756
1277
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
October
November
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
October
November
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
5
10
15
20
25
W Sussex
W Midlands
Warks
Staffs
Shropshire
Pembs
N Yorks
NE Wales
Leics & Rut
Heref
Gwent
E Sussex
Dorset
Cumbria
Cheshire
Carms
Beds
Argyll & Bute
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during November 2023 (% submission per
County)
County
%Resampled %Retested
Argyll & Bute
7.49 %
9.13 %
Avon
3.09 %
5.56 %
Beds
6.08 %
8.37 %
Bucks
Carms
5.01 %
6.12 %
Ceredigion
4.77 %
5.92 %
Cheshire
0.94 %
1.41 %
Corn & Scilly
4.81 %
5.88 %
Cumbria
Devon
2.96 %
3.99 %
Dorset
5.56 %
11.11 %
Essex
1.41 %
1.41 %
E Sussex
6.90 %
6.90 %
Gloucs
2.80 %
3.71 %
Gwent
11.76 %
11.76 %
Gwynedd
6.12 %
7.29 %
Heref
2.53 %
3.23 %
Humberside
5.26 %
5.26 %
Leics & Rut
8.22 %
8.22 %
Lincs
4.27 %
4.57 %
NE Wales
4.50 %
5.67 %
N Somer S Glo
4.00 %
4.00 %
N Yorks
3.71 %
5.46 %
Oxon
1.58 %
4.22 %
Pembs
2.60 %
3.42 %
Powys
5.51 %
6.69 %
Shropshire
2.23 %
3.78 %
Somerset excl
2.88 %
2.88 %
Staffs
3.98 %
4.97 %
S Wales
Warks
4.11 %
4.43 %
Wiltshire
2.54 %
3.75 %
W Midlands
1.81 %
1.81 %
Worcs
4.26 %
4.26 %
W Sussex
6.07 %
7.86 %

Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
14982
837
5.6%
15067
837
5.6%
Wales
6624
439
6.6%
6796
439
6.5%
Scotland
427
1
0.2%
427
1
0.2%
GB
22033
1277
5.8%
22290
1277
5.7%
Table 6a (i): Number of animals and submissions tested in November 2023
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
126269
5544
4.4%
134916
5545
4.1%
Wales
55369
3125
5.6%
59406
3125
5.3%
Scotland
7433
463
6.2%
11482
463
4.0%
GB
189053
9132
4.8%
205804
9133
4.4%
Table 6b (i): Number of animals and submissions tested in 2023 Up to end of November
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
8417
292
3.5%
8505
292
3.4%
Wales
6726
350
5.2%
6794
350
5.2%
Scotland
549
31
5.6%
549
31
5.6%
GB
15692
673
4.3%
15848
673
4.2%
Table 6a (ii): Number of animals and submissions tested in November 2022
Table 6b (ii): Number of animals and submissions tested in 2022 Up to end of November
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
136034
5314
3.9%
145549
5314
3.7%
Wales
47674
2894
6.1%
51012
2894
5.7%
Scotland
3701
121
3.3%
3865
121
3.1%
GB
187407
8329
4.4%
200426
8329
4.2%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
Bedfordshire
PRV-SP
1
1
1
100.00 %
East Sussex
PRV-SP
1
1
0
0
West Sussex
PRV-SE
1
14
5
35.71 %
Total
3
16
6
37.50 %
*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 November 2023
Table 7b Number of private samples 2023
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
Bedfordshire
PRV-SP
1
1
1
100.00 %
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
East Sussex
PRV-SP
1
1
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
5
567
29
5.11 %
PRV-SP
1
5
0
0
Total
36
912
52
5.70 %

Country
County
Test Reason
Num
Submissions
Num Samples
Tested
Num Positive
Samples
% Positive
England
Oxfordshire
BOV-P
2
564
23
4.1%
England
2
564
23
4.1%
Wales
Carmarthenshire
BOV-IR-C
5
59
3
5.1%
BOV-IR-EX
1
4
1
25.0%
Ceredigion
BOV-IR-C
2
8
1
12.5%
BOV-IR-EX
1
2
0
0
North East Wales
BOV-IR-C
2
6
2
33.3%
Pembrokeshire
BOV-IR-C
18
392
35
8.9%
BOV-IR-EX
2
22
2
9.1%
BOV-OTHER
2
164
6
3.7%
BOV-P
1
22
0
0
Powys
BOV-IR-C
7
109
5
4.6%
South Wales
BOV-IR-C
1
2
1
50.0%
Wales
42
790
56
7.1%
All GB
44
1,354
79
5.8 %
Table 8a Number of Cattle Antibody Tests November 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
Oxfordshire
BOV-P
2
564
23
4.1%
Somerset excl North
BOV-P
1
145
6
4.1%
England
8
1,626
77
4.7%
Scotland
Ayrshire
BOV-OTHER
1
2
1
50.0%
Scotland
1
2
1
50.0%
Wales
Carmarthenshire
BOV-IR-C
42
358
69
19.3%
BOV-IR-EX
7
40
6
15.0%
BOV-OTHER
4
196
13
6.6%
BOV-P
2
90
7
7.8%
Ceredigion
BOV-IR-C
29
278
39
14.0%
BOV-IR-EX
7
61
13
21.3%
BOV-OTHER
3
156
4
2.6%
North East Wales
BOV-IR-C
35
275
45
16.4%
BOV-IR-EX
6
33
4
12.1%
BOV-OTHER
1
54
0
0
BOV-P
2
67
2
3.0%
BOV-POSTM
8
21
5
23.8%
Pembrokeshire
BOV-IR-C
157
1,820
262
14.4%
BOV-IR-EX
30
219
33
15.1%
BOV-OTHER
17
1,643
66
4.0%
BOV-P
6
165
12
7.3%

Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
Powys
1
8
1
12.5%
BOV-IR-C
36
285
27
9.5%
BOV-IR-EX
3
46
3
6.5%
BOV-OTHER
2
134
5
3.7%
South Wales
BOV-IR-C
13
84
15
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
421
6,346
660
10.4%
All GB
430
7,974
738
9.3 %