Monthly Report: Surveillance Project SB4008 IFNg (TC0651 and TC0751) & Antibody (TC0077) tests for bovine tuberculosis-December 2024
Source: environment.data.gov.uk (2025-04-29)

Interferon-Gamma Testing for Bovine Tuberculosis - Monthly Reports from January 2024. 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
Issued 13 January 2025
1st- 31st December 2024
220

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

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

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

Num
samples
December
2024
%
Total 2024
%
Submissions
185
2617
Samples
Total (%)
14677
100.00 %
214364
100.00 %
England
8534
58.15 %
137608
64.19 %
Wales
5400
36.79 %
70247
32.77 %
Scotland
743
5.06 %
6509
3.04 %
Parallel Tests
PAR-CHR
868
5.91 %
2498
1.17 %
PAR-CUL-N
0
0.00 %
397
0.19 %
PAR-CUL-P
82
0.56 %
5496
2.56 %
PAR-HERD-S
0
0.00 %
161
0.08 %
PAR-IR-EX
10
0.07 %
427
0.20 %
PAR-IR-SEV
242
1.65 %
3649
1.70 %
PAR-NEW-IN
4141
28.21 %
50965
23.77 %
PAR-OTHER
1350
9.20 %
10349
4.83 %
PAR-PERSIS
2427
16.54 %
36356
xx-xxxx-xxxx %
PAR-POSTM
0
0.00 %
PAR-RAPID
53
0.36 %
807
0.38 %
PAR-RECUR
5480
37.34 %
95624
44.61 %
Total(% of all samples)
14653
99.84 %
206729
96.44 %
Serial/Extended Tests
SER-ANOM
0
0.00 %
SER-FLEXI
24
0.16 %
7363
3.43 %
SER-FRAUD
0
0.00 %
SER-NSR
0
0.00 %
4
0.00 %
SER-OTHER
0
0.00 %
268
0.13 %
Total(% of all samples)
24
0.16 %
7635
3.56 %
Total
14677
100.00 %
214364
100.00 %
Retests
Total (% of all samples)
781
5.32 %
13536
6.31 %
England
412
2.81 %
9167
4.28 %
Wales
346
2.36 %
3986
1.86 %
Scotland
23
0.16 %
383
0.18 %
Resamples
Total (% of all samples)
638
4.35 %
10986
5.12 %
England
325
2.21 %
7500
3.50 %
Wales
298
2.03 %
3194
1.49 %
Scotland
15
0.10 %
292
0.14 %
Rejects
Total (% of all samples)
759
5.17 %
2495
1.16 %
England
509
3.47 %
2012
0.94 %
Wales
60
0.41 %
285
0.13 %
Scotland
190
1.29 %
198
0.09 %
Table 1. Monthly Totals for December 2024
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-P
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-CHR
868
5.9 %
PAR-CUL-P
82
0.6 %
PAR-IR-EX
10
0.1 %
PAR-IR-SEV
242
1.6 %
PAR-NEW-IN
4141
28.2 %
PAR-OTHER
1350
9.2 %
PAR-PERSIS
2427
16.5 %
PAR-RAPID
53
0.4 %
PAR-RECUR
5480
37.3 %
SER-FLEXI
24
0.2 %
Total
14677
100.00 %
Figure 1. Number of samples submitted in each category during December 2024
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
200
400
600
800
1000
1200
1400
1600
1800
Dumfries & G
Argyll & Bute
W Glamorgan
S Wales
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Warks
Staffs
Somerset excl N
Shropshire
Oxon
Lincs
Leics & Rut
Lancashire
Heref
Hampshire
Gloucs
Dorset
Devon
Derbyshire
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-CUL-P
PAR-CHR
Breakdown of
Samples
submitted by
County
Figure 2. Number of samples submitted in each category by County during December 2024
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
Kirkcudbright
Dumfries & G
Ayrshire
Argyll & Bute
W Glamorgan
S Wales
S Glamorgan
Powys
Pembs
NE Wales
Mid Glamorgan
Gwynedd
Gwent
Conwy
Ceredigion
Carms
W Sussex
Wiltshire
Warks
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
Notts
Northants
Norfolk
Lincs
Leics & Rut
Lancashire
Kent
Humberside
Herts
Heref
Hampshire
Gloucs
E Sussex
Durham
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Cheshire
Bucks
Berks
Beds
Avon
Scotland
Wales
England
SER-OTHER
SER-NSR
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
PAR-CHR
Breakdown
of Samples
submitted
by County
Figure 3. Number of samples submitted in each category by County during 2024
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
3
564
3.84 %
47
8.33 %
347
61.52 %
29
5.14 %
23
4.08 %
147
26.06 %
Corn & Scilly
PAR-PERSIS
1
70
0.48 %
9
12.86 %
61
87.14 %
2
2.86 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
215
1.46 %
9
4.19 %
195
90.70 %
15
6.98 %
11
5.12 %
0
0.00 %
Devon
PAR-CHR
3
556
3.79 %
46
8.27 %
492
88.49 %
20
3.60 %
18
3.24 %
0
0.00 %
PAR-CUL-P
1
6
0.04 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
84
0.57 %
2
2.38 %
74
88.10 %
8
9.52 %
8
9.52 %
0
0.00 %
Dorset
PAR-RECUR
1
290
1.98 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
290
100.00 %
Gloucs
PAR-RECUR
4
180
1.23 %
29
16.11 %
142
78.89 %
10
5.56 %
9
5.00 %
0
0.00 %
SER-FLEXI
1
14
0.10 %
4
28.57 %
8
57.14 %
2
14.29 %
2
14.29 %
0
0.00 %
Heref
PAR-PERSIS
1
4
0.03 %
0
0.00 %
2
50.00 %
2
50.00 %
2
50.00 %
0
0.00 %
PAR-RECUR
3
136
0.93 %
10
7.35 %
119
87.50 %
12
8.82 %
7
5.15 %
0
0.00 %
Shropshire
PAR-RECUR
1
21
0.14 %
1
4.76 %
17
80.95 %
3
14.29 %
3
14.29 %
0
0.00 %
Somerset excl N
PAR-CHR
2
312
2.13 %
39
12.50 %
268
85.90 %
8
2.56 %
5
1.60 %
0
0.00 %
PAR-CUL-P
2
3
0.02 %
0
0.00 %
1
33.33 %
2
66.67 %
2
66.67 %
0
0.00 %
PAR-RECUR
3
1,144
7.79 %
53
4.63 %
1072
93.71 %
23
2.01 %
16
1.40 %
3
0.26 %
Staffs
PAR-OTHER
1
134
0.91 %
18
13.43 %
115
85.82 %
5
3.73 %
1
0.75 %
0
0.00 %
PAR-RECUR
2
838
5.71 %
13
1.55 %
814
97.14 %
28
3.34 %
11
1.31 %
0
0.00 %
Wiltshire
PAR-RECUR
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
4
1,215
8.28 %
35
2.88 %
1124
92.51 %
59
4.86 %
56
4.61 %
0
0.00 %
Bucks
PAR-NEW-IN
2
239
1.63 %
1
0.42 %
209
87.45 %
30
12.55 %
29
12.13 %
0
0.00 %
PAR-RECUR
2
11
0.07 %
3
27.27 %
7
63.64 %
1
9.09 %
1
9.09 %
0
0.00 %
Cheshire
PAR-RECUR
1
24
0.16 %
1
4.17 %
22
91.67 %
2
8.33 %
1
4.17 %
0
0.00 %
Derbyshire
PAR-NEW-IN
3
326
2.22 %
20
6.13 %
299
91.72 %
9
2.76 %
7
2.15 %
0
0.00 %
PAR-OTHER
1
294
2.00 %
18
6.12 %
270
91.84 %
7
2.38 %
5
1.70 %
1
0.34 %
PAR-PERSIS
1
14
0.10 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
14
100.00 %
Hampshire
PAR-NEW-IN
3
10
0.07 %
0
0.00 %
2
20.00 %
0
0.00 %
0
0.00 %
8
80.00 %
Table 2a. Summary by County for December 2024
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N:
new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 2a. Summary by County for December 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
Leics & Rut
PAR-NEW-IN
1
22
0.15 %
0
0.00 %
21
95.45 %
2
9.09 %
1
4.55 %
0
0.00 %
Oxon
PAR-CUL-P
1
73
0.50 %
9
12.33 %
57
78.08 %
8
10.96 %
7
9.59 %
0
0.00 %
PAR-NEW-IN
1
30
0.20 %
0
0.00 %
28
93.33 %
2
6.67 %
2
6.67 %
0
0.00 %
PAR-RECUR
2
12
0.08 %
1
8.33 %
11
91.67 %
0
0.00 %
0
0.00 %
0
0.00 %
Warks
PAR-RECUR
3
351
2.39 %
20
5.70 %
277
78.92 %
13
3.70 %
10
2.85 %
44
12.54 %
England - LRA
Cumbria
PAR-NEW-IN
6
790
5.38 %
41
5.19 %
691
87.47 %
66
8.35 %
56
7.09 %
2
0.25 %
Lancashire
PAR-NEW-IN
1
13
0.09 %
1
7.69 %
10
76.92 %
2
15.38 %
2
15.38 %
0
0.00 %
Lincs
PAR-NEW-IN
4
538
3.67 %
14
2.60 %
494
91.82 %
42
7.81 %
30
5.58 %
0
0.00 %
England
71
8534
58.15 %
444
5.20 %
7256
85.02 %
412
4.83 %
325
3.81 %
509
5.96 %
Wales - High TB
Carms
PAR-PERSIS
3
190
1.29 %
19
10.00 %
157
82.63 %
15
7.89 %
13
6.84 %
1
0.53 %
PAR-RAPID
5
11
0.07 %
4
36.36 %
7
63.64 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
4
649
4.42 %
49
7.55 %
562
86.59 %
43
6.63 %
38
5.86 %
0
0.00 %
Ceredigion
PAR-IR-SEV
2
15
0.10 %
6
40.00 %
8
53.33 %
1
6.67 %
1
6.67 %
0
0.00 %
PAR-PERSIS
5
1,016
6.92 %
128
12.60 %
795
78.25 %
65
6.40 %
58
5.71 %
35
3.44 %
PAR-RAPID
3
11
0.07 %
3
27.27 %
7
63.64 %
1
9.09 %
1
9.09 %
0
0.00 %
Gwent
PAR-IR-SEV
1
6
0.04 %
4
66.67 %
2
33.33 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
3
377
2.57 %
17
4.51 %
343
90.98 %
20
5.31 %
17
4.51 %
0
0.00 %
PAR-PERSIS
3
190
1.29 %
31
16.32 %
148
77.89 %
4
2.11 %
3
1.58 %
8
4.21 %
PAR-RAPID
1
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
2
9
0.06 %
4
44.44 %
4
44.44 %
4
44.44 %
1
11.11 %
0
0.00 %
Pembs
PAR-IR-EX
2
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
17
157
1.07 %
62
39.49 %
84
53.50 %
11
7.01 %
10
6.37 %
1
0.64 %
PAR-OTHER
3
544
3.71 %
28
5.15 %
498
91.54 %
21
3.86 %
17
3.13 %
1
0.18 %
PAR-PERSIS
5
443
3.02 %
31
7.00 %
368
83.07 %
45
10.16 %
44
9.93 %
0
0.00 %
PAR-RAPID
5
13
0.09 %
2
15.38 %
11
84.62 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
3
452
3.08 %
21
4.65 %
420
92.92 %
21
4.65 %
9
1.99 %
2
0.44 %
Powys
PAR-IR-SEV
4
52
0.35 %
15
28.85 %
34
65.38 %
3
5.77 %
3
5.77 %
0
0.00 %
PAR-RAPID
1
1
0.01 %
1
100.00 %
0
0.00 %
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 December 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
4
400
2.73 %
15
3.75 %
351
87.75 %
30
7.50 %
25
6.25 %
9
2.25 %
S Wales
PAR-PERSIS
1
12
0.08 %
1
8.33 %
7
58.33 %
4
33.33 %
4
33.33 %
0
0.00 %
W Glamorgan
PAR-RAPID
1
3
0.02 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-RAPID
1
3
0.02 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-RAPID
1
2
0.01 %
1
50.00 %
0
0.00 %
1
50.00 %
1
50.00 %
0
0.00 %
NE Wales
PAR-IR-EX
4
8
0.05 %
3
37.50 %
2
25.00 %
3
37.50 %
3
37.50 %
0
0.00 %
PAR-IR-SEV
2
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
3
159
1.08 %
4
2.52 %
142
89.31 %
14
8.81 %
13
8.18 %
0
0.00 %
PAR-OTHER
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
29
0.20 %
1
3.45 %
23
79.31 %
5
17.24 %
5
17.24 %
0
0.00 %
Powys
PAR-IR-SEV
2
8
0.05 %
2
25.00 %
6
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
2
16
0.11 %
1
6.25 %
9
56.25 %
6
37.50 %
6
37.50 %
0
0.00 %
PAR-RAPID
1
5
0.03 %
3
60.00 %
2
40.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
1
88
0.60 %
0
0.00 %
83
94.32 %
4
4.55 %
4
4.55 %
1
1.14 %
Wales - Low TB
Gwynedd
PAR-NEW-IN
3
40
0.27 %
1
2.50 %
38
95.00 %
1
2.50 %
1
2.50 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
1
1
0.01 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-SEV
1
2
0.01 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
459
3.13 %
17
3.70 %
420
91.50 %
23
5.01 %
20
4.36 %
2
0.44 %
PAR-RECUR
2
20
0.14 %
1
5.00 %
18
90.00 %
1
5.00 %
1
5.00 %
0
0.00 %
Wales
107
5400
36.79 %
483
8.94 %
4559
84.43 %
346
6.41 %
298
5.52 %
60
1.11 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
1
97
0.66 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
97
100.00 %
Dumfries & G
PAR-NEW-IN
6
646
4.40 %
15
2.32 %
523
80.96 %
23
3.56 %
15
2.32 %
93
14.40 %
Scotland
7
743
5.06 %
15
2.02 %
523
70.39 %
23
3.10 %
15
2.02 %
190
25.57 %
Grand Total
Sum:
185
14677
942
12338
781
638
759
*For test criteria please refer to Operational notes.
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N:
new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - HRA
Avon
PAR-CHR
5
433
0.20 %
49
11.32 %
360
83.14 %
26
6.00 %
24
5.54 %
0
0.00 %
PAR-PERSIS
6
758
0.35 %
91
12.01 %
623
82.19 %
48
6.33 %
44
5.80 %
0
0.00 %
PAR-RECUR
30
3,702
1.73 %
207
5.59 %
3141
84.85 %
254
6.86 %
205
5.54 %
149
4.02 %
SER-FLEXI
4
54
0.03 %
0
0.00 %
52
96.30 %
2
3.70 %
2
3.70 %
0
0.00 %
Corn & Scilly
PAR-CUL-P
2
891
0.42 %
35
3.93 %
805
90.35 %
58
6.51 %
51
5.72 %
0
0.00 %
PAR-OTHER
9
1,837
0.86 %
124
6.75 %
1603
87.26 %
127
6.91 %
110
5.99 %
0
0.00 %
PAR-PERSIS
14
1,754
0.82 %
141
8.04 %
1452
82.78 %
186
10.60 %
160
9.12 %
1
0.06 %
PAR-RECUR
83
8,267
3.86 %
436
5.27 %
7093
85.80 %
734
8.88 %
628
7.60 %
110
1.33 %
SER-FLEXI
9
118
0.06 %
21
17.80 %
90
76.27 %
9
7.63 %
6
5.08 %
1
0.85 %
Devon
PAR-CHR
8
1,014
0.47 %
56
5.52 %
903
89.05 %
61
6.02 %
54
5.33 %
1
0.10 %
PAR-CUL-N
5
240
0.11 %
13
5.42 %
213
88.75 %
17
7.08 %
14
5.83 %
0
0.00 %
PAR-CUL-P
10
741
0.35 %
30
4.05 %
582
78.54 %
157
21.19 %
129
17.41 %
0
0.00 %
PAR-OTHER
12
722
0.34 %
25
3.46 %
637
88.23 %
76
10.53 %
59
8.17 %
1
0.14 %
PAR-PERSIS
17
2,805
1.31 %
169
6.02 %
2496
88.98 %
186
6.63 %
136
4.85 %
4
0.14 %
PAR-RECUR
80
12,154
5.67 %
485
3.99 %
10851
89.28 %
921
7.58 %
743
6.11 %
75
0.62 %
Dorset
PAR-CUL-P
1
6
0.00 %
0
0.00 %
6
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
1
29
0.01 %
1
3.45 %
28
96.55 %
1
3.45 %
0
0.00 %
0
0.00 %
PAR-PERSIS
3
1,245
0.58 %
58
4.66 %
1160
93.17 %
40
3.21 %
27
2.17 %
0
0.00 %
PAR-RECUR
19
3,488
1.63 %
202
5.79 %
2852
81.77 %
172
4.93 %
142
4.07 %
292
8.37 %
SER-FLEXI
10
509
0.24 %
68
13.36 %
427
83.89 %
19
3.73 %
14
2.75 %
0
0.00 %
Gloucs
PAR-RECUR
32
4,230
1.97 %
221
5.22 %
3594
84.96 %
196
4.63 %
156
3.69 %
259
6.12 %
SER-FLEXI
1
14
0.01 %
4
28.57 %
8
57.14 %
2
14.29 %
2
14.29 %
0
0.00 %
Heref
PAR-CHR
2
48
0.02 %
1
2.08 %
44
91.67 %
3
6.25 %
3
6.25 %
0
0.00 %
PAR-CUL-N
1
142
0.07 %
13
9.15 %
119
83.80 %
12
8.45 %
10
7.04 %
0
0.00 %
PAR-CUL-P
2
525
0.24 %
1
0.19 %
35
6.67 %
4
0.76 %
4
0.76 %
485
92.38 %
PAR-OTHER
3
158
0.07 %
11
6.96 %
137
86.71 %
13
8.23 %
10
6.33 %
0
0.00 %
Table 2b. Summary by County for 2024
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
5
859
0.40 %
43
5.01 %
788
91.73 %
32
3.73 %
28
3.26 %
0
0.00 %
PAR-RECUR
50
5,795
2.70 %
270
4.66 %
5116
88.28 %
474
8.18 %
405
6.99 %
4
0.07 %
Shropshire
PAR-CHR
2
85
0.04 %
3
3.53 %
71
83.53 %
12
14.12 %
11
12.94 %
0
0.00 %
PAR-CUL-P
3
370
0.17 %
39
10.54 %
320
86.49 %
11
2.97 %
11
2.97 %
0
0.00 %
PAR-OTHER
9
383
0.18 %
27
7.05 %
334
87.21 %
24
6.27 %
22
5.74 %
0
0.00 %
PAR-PERSIS
4
778
0.36 %
81
10.41 %
674
86.63 %
28
3.60 %
23
2.96 %
0
0.00 %
PAR-RECUR
59
10,012
4.67 %
370
3.70 %
9110
90.99 %
611
6.10 %
484
4.83 %
48
0.48 %
SER-FLEXI
5
437
0.20 %
88
20.14 %
313
71.62 %
44
10.07 %
36
8.24 %
0
0.00 %
Somerset excl N
PAR-CHR
4
390
0.18 %
43
11.03 %
341
87.44 %
10
2.56 %
6
1.54 %
0
0.00 %
PAR-CUL-P
11
996
0.46 %
43
4.32 %
884
88.76 %
67
6.73 %
58
5.82 %
11
1.10 %
PAR-OTHER
2
162
0.08 %
4
2.47 %
141
87.04 %
18
11.11 %
17
10.49 %
0
0.00 %
PAR-PERSIS
3
262
0.12 %
19
7.25 %
216
82.44 %
31
11.83 %
26
9.92 %
1
0.38 %
PAR-RECUR
50
7,255
3.38 %
379
5.22 %
6574
90.61 %
363
5.00 %
291
4.01 %
11
0.15 %
SER-FLEXI
3
576
0.27 %
20
3.47 %
524
90.97 %
40
6.94 %
32
5.56 %
0
0.00 %
Staffs
PAR-CHR
3
178
0.08 %
3
1.69 %
164
92.13 %
16
8.99 %
11
6.18 %
0
0.00 %
PAR-OTHER
3
201
0.09 %
25
12.44 %
169
84.08 %
13
6.47 %
6
2.99 %
1
0.50 %
PAR-PERSIS
2
233
0.11 %
53
22.75 %
162
69.53 %
27
11.59 %
18
7.73 %
0
0.00 %
PAR-RECUR
44
7,944
3.71 %
244
3.07 %
7344
92.45 %
441
5.55 %
349
4.39 %
7
0.09 %
Wiltshire
PAR-CUL-P
1
219
0.10 %
9
4.11 %
205
93.61 %
8
3.65 %
5
2.28 %
0
0.00 %
PAR-OTHER
1
470
0.22 %
13
2.77 %
442
94.04 %
23
4.89 %
15
3.19 %
0
0.00 %
PAR-PERSIS
2
329
0.15 %
7
2.13 %
307
93.31 %
27
8.21 %
15
4.56 %
0
0.00 %
PAR-RECUR
46
8,175
3.81 %
375
4.59 %
7513
91.90 %
343
4.20 %
265
3.24 %
22
0.27 %
England - Edge
Berks
PAR-CHR
1
138
0.06 %
12
8.70 %
117
84.78 %
12
8.70 %
9
6.52 %
0
0.00 %
PAR-NEW-IN
10
1,612
0.75 %
60
3.72 %
1480
91.81 %
76
4.71 %
69
4.28 %
3
0.19 %
PAR-RECUR
1
9
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
9
100.00 %
Bucks
PAR-NEW-IN
25
2,392
1.12 %
103
4.31 %
2153
90.01 %
155
6.48 %
134
5.60 %
2
0.08 %
PAR-RECUR
7
348
0.16 %
23
6.61 %
303
87.07 %
26
7.47 %
22
6.32 %
0
0.00 %
Cheshire
PAR-CUL-N
1
4
0.00 %
0
0.00 %
2
50.00 %
2
50.00 %
2
50.00 %
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-CUL-P
5
1,152
0.54 %
44
3.82 %
1084
94.10 %
50
4.34 %
24
2.08 %
0
0.00 %
PAR-NEW-IN
2
1,061
0.49 %
32
3.02 %
792
74.65 %
287
27.05 %
237
22.34 %
0
0.00 %
PAR-OTHER
8
1,527
0.71 %
53
3.47 %
1429
93.58 %
56
3.67 %
45
2.95 %
0
0.00 %
PAR-PERSIS
19
2,239
1.04 %
132
5.90 %
1888
84.32 %
249
11.12 %
219
9.78 %
0
0.00 %
PAR-RECUR
8
1,701
0.79 %
81
4.76 %
1575
92.59 %
54
3.17 %
45
2.65 %
0
0.00 %
SER-FLEXI
8
1,397
0.65 %
47
3.36 %
1283
91.84 %
92
6.59 %
67
4.80 %
0
0.00 %
Derbyshire
PAR-CUL-N
1
11
0.01 %
0
0.00 %
11
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
9
450
0.21 %
23
5.11 %
406
90.22 %
25
5.56 %
21
4.67 %
0
0.00 %
PAR-OTHER
5
641
0.30 %
69
10.76 %
541
84.40 %
36
5.62 %
30
4.68 %
1
0.16 %
PAR-PERSIS
3
439
0.20 %
15
3.42 %
395
89.98 %
20
4.56 %
15
3.42 %
14
3.19 %
PAR-RECUR
10
1,470
0.69 %
36
2.45 %
1341
91.22 %
106
7.21 %
91
6.19 %
2
0.14 %
E Sussex
PAR-CUL-P
3
519
0.24 %
23
4.43 %
474
91.33 %
34
6.55 %
22
4.24 %
0
0.00 %
PAR-NEW-IN
17
1,769
0.83 %
88
4.97 %
1580
89.32 %
122
6.90 %
100
5.65 %
1
0.06 %
Hampshire
PAR-NEW-IN
12
585
0.27 %
23
3.93 %
523
89.40 %
45
7.69 %
30
5.13 %
9
1.54 %
Leics & Rut
PAR-NEW-IN
41
5,014
2.34 %
150
2.99 %
4496
89.67 %
431
8.60 %
355
7.08 %
13
0.26 %
Northants
PAR-NEW-IN
28
2,712
1.27 %
74
2.73 %
2448
90.27 %
190
7.01 %
162
5.97 %
28
1.03 %
PAR-RECUR
1
197
0.09 %
1
0.51 %
180
91.37 %
18
9.14 %
16
8.12 %
0
0.00 %
Notts
PAR-NEW-IN
11
876
0.41 %
31
3.54 %
772
88.13 %
77
8.79 %
73
8.33 %
0
0.00 %
Oxon
PAR-CHR
1
174
0.08 %
10
5.75 %
160
91.95 %
5
2.87 %
4
2.30 %
0
0.00 %
PAR-CUL-P
1
73
0.03 %
9
12.33 %
57
78.08 %
8
10.96 %
7
9.59 %
0
0.00 %
PAR-HERD-S
1
9
0.00 %
0
0.00 %
7
77.78 %
2
22.22 %
2
22.22 %
0
0.00 %
PAR-NEW-IN
18
1,389
0.65 %
47
3.38 %
1211
87.19 %
150
10.80 %
130
9.36 %
1
0.07 %
PAR-OTHER
3
361
0.17 %
29
8.03 %
324
89.75 %
9
2.49 %
8
2.22 %
0
0.00 %
PAR-PERSIS
2
784
0.37 %
32
4.08 %
728
92.86 %
40
5.10 %
24
3.06 %
0
0.00 %
PAR-RECUR
25
2,656
1.24 %
96
3.61 %
2451
92.28 %
129
4.86 %
105
3.95 %
4
0.15 %
Warks
PAR-CHR
2
38
0.02 %
7
18.42 %
30
78.95 %
2
5.26 %
1
2.63 %
0
0.00 %
PAR-HERD-S
2
80
0.04 %
6
7.50 %
67
83.75 %
8
10.00 %
7
8.75 %
0
0.00 %
PAR-OTHER
6
127
0.06 %
16
12.60 %
98
77.17 %
15
11.81 %
13
10.24 %
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
13
1,629
0.76 %
79
4.85 %
1389
85.27 %
115
7.06 %
117
7.18 %
44
2.70 %
England - LRA
Beds
PAR-NEW-IN
2
33
0.02 %
2
6.06 %
9
27.27 %
5
15.15 %
5
15.15 %
17
51.52 %
Cumbria
PAR-NEW-IN
30
4,827
2.25 %
115
2.38 %
4186
86.72 %
247
5.12 %
206
4.27 %
320
6.63 %
SER-NSR
1
4
0.00 %
0
0.00 %
4
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-OTHER
1
7
0.00 %
0
0.00 %
7
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Durham
PAR-NEW-IN
4
109
0.05 %
3
2.75 %
95
87.16 %
8
7.34 %
7
6.42 %
4
3.67 %
Herts
PAR-NEW-IN
5
347
0.16 %
10
2.88 %
318
91.64 %
26
7.49 %
19
5.48 %
0
0.00 %
Humberside
PAR-NEW-IN
2
83
0.04 %
0
0.00 %
75
90.36 %
10
12.05 %
8
9.64 %
0
0.00 %
Kent
SER-OTHER
2
248
0.12 %
1
0.40 %
240
96.77 %
9
3.63 %
6
2.42 %
1
0.40 %
Lancashire
PAR-NEW-IN
8
1,267
0.59 %
54
4.26 %
1177
92.90 %
46
3.63 %
35
2.76 %
1
0.08 %
Lincs
PAR-CUL-P
1
4
0.00 %
0
0.00 %
3
75.00 %
1
25.00 %
1
25.00 %
0
0.00 %
PAR-NEW-IN
16
1,187
0.55 %
31
2.61 %
1098
92.50 %
80
6.74 %
58
4.89 %
0
0.00 %
PAR-PERSIS
2
131
0.06 %
5
3.82 %
123
93.89 %
8
6.11 %
3
2.29 %
0
0.00 %
SER-FLEXI
6
375
0.17 %
5
1.33 %
314
83.73 %
11
2.93 %
6
1.60 %
50
13.33 %
Norfolk
PAR-NEW-IN
4
112
0.05 %
7
6.25 %
75
66.96 %
27
24.11 %
27
24.11 %
3
2.68 %
N Yorks
PAR-NEW-IN
5
581
0.27 %
7
1.20 %
538
92.60 %
40
6.88 %
35
6.02 %
1
0.17 %
W Sussex
PAR-NEW-IN
3
704
0.33 %
32
4.55 %
660
93.75 %
16
2.27 %
11
1.56 %
1
0.14 %
SER-OTHER
2
13
0.01 %
0
0.00 %
13
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
England
1085
137608
64.19 %
6343
4.61 %
121753
88.48 %
9167
6.66 %
7500
5.45 %
2012
1.46 %
Wales - High TB
Carms
PAR-HERD-S
2
37
0.02 %
0
0.00 %
34
91.89 %
3
8.11 %
3
8.11 %
0
0.00 %
PAR-IR-EX
11
38
0.02 %
11
28.95 %
23
60.53 %
4
10.53 %
4
10.53 %
0
0.00 %
PAR-IR-SEV
61
430
0.20 %
153
35.58 %
262
60.93 %
16
3.72 %
13
3.02 %
2
0.47 %
PAR-NEW-IN
1
21
0.01 %
1
4.76 %
19
90.48 %
2
9.52 %
1
4.76 %
0
0.00 %
PAR-OTHER
13
1,432
0.67 %
253
17.67 %
1140
79.61 %
58
4.05 %
38
2.65 %
1
0.07 %
PAR-PERSIS
41
5,379
2.51 %
360
6.69 %
4848
90.13 %
205
3.81 %
162
3.01 %
9
0.17 %
PAR-RAPID
60
210
0.10 %
88
41.90 %
119
56.67 %
7
3.33 %
3
1.43 %
0
0.00 %
PAR-RECUR
40
5,114
2.39 %
233
4.56 %
4693
91.77 %
254
4.97 %
186
3.64 %
2
0.04 %
SER-FLEXI
4
125
0.06 %
36
28.80 %
84
67.20 %
5
4.00 %
4
3.20 %
1
0.80 %
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
Ceredigion
PAR-HERD-S
1
35
0.02 %
6
17.14 %
27
77.14 %
2
5.71 %
2
5.71 %
0
0.00 %
PAR-IR-EX
7
31
0.01 %
16
51.61 %
15
48.39 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
21
169
0.08 %
76
44.97 %
90
53.25 %
2
1.18 %
2
1.18 %
1
0.59 %
PAR-PERSIS
13
1,635
0.76 %
184
11.25 %
1317
80.55 %
113
6.91 %
98
5.99 %
36
2.20 %
PAR-RAPID
15
60
0.03 %
18
30.00 %
40
66.67 %
3
5.00 %
2
3.33 %
0
0.00 %
PAR-RECUR
8
637
0.30 %
33
5.18 %
572
89.80 %
39
6.12 %
31
4.87 %
1
0.16 %
Gwent
PAR-IR-EX
3
19
0.01 %
8
42.11 %
9
47.37 %
2
10.53 %
2
10.53 %
0
0.00 %
PAR-IR-SEV
11
110
0.05 %
40
36.36 %
70
63.64 %
1
0.91 %
1
0.91 %
0
0.00 %
PAR-OTHER
11
514
0.24 %
44
8.56 %
450
87.55 %
24
4.67 %
20
3.89 %
0
0.00 %
PAR-PERSIS
12
770
0.36 %
78
10.13 %
666
86.49 %
22
2.86 %
18
2.34 %
8
1.04 %
PAR-RAPID
26
105
0.05 %
44
41.90 %
59
56.19 %
3
2.86 %
2
1.90 %
0
0.00 %
PAR-RECUR
23
1,278
0.60 %
43
3.36 %
1174
91.86 %
71
5.56 %
61
4.77 %
0
0.00 %
SER-FLEXI
8
409
0.19 %
9
2.20 %
379
92.67 %
27
6.60 %
19
4.65 %
2
0.49 %
Pembs
PAR-IR-EX
35
144
0.07 %
64
44.44 %
75
52.08 %
5
3.47 %
5
3.47 %
0
0.00 %
PAR-IR-SEV
202
2,125
0.99 %
653
30.73 %
1377
64.80 %
110
5.18 %
91
4.28 %
4
0.19 %
PAR-OTHER
14
1,146
0.53 %
104
9.08 %
1006
87.78 %
48
4.19 %
35
3.05 %
1
0.09 %
PAR-PERSIS
105
11,557
5.39 %
687
5.94 %
10286
89.00 %
574
4.97 %
444
3.84 %
140
1.21 %
PAR-RAPID
86
265
0.12 %
77
29.06 %
178
67.17 %
11
4.15 %
10
3.77 %
0
0.00 %
PAR-RECUR
61
6,187
2.89 %
293
4.74 %
5610
90.67 %
362
5.85 %
270
4.36 %
14
0.23 %
SER-FLEXI
18
1,799
0.84 %
107
5.95 %
1554
86.38 %
157
8.73 %
136
7.56 %
2
0.11 %
Powys
PAR-IR-EX
12
98
0.05 %
39
39.80 %
57
58.16 %
7
7.14 %
2
2.04 %
0
0.00 %
PAR-IR-SEV
42
392
0.18 %
99
25.26 %
273
69.64 %
21
5.36 %
20
5.10 %
0
0.00 %
PAR-OTHER
3
75
0.03 %
2
2.67 %
68
90.67 %
7
9.33 %
4
5.33 %
1
1.33 %
PAR-PERSIS
9
1,078
0.50 %
71
6.59 %
940
87.20 %
81
7.51 %
67
6.22 %
0
0.00 %
PAR-RAPID
24
42
0.02 %
12
28.57 %
30
71.43 %
1
2.38 %
0
0.00 %
0
0.00 %
PAR-RECUR
22
1,555
0.73 %
79
5.08 %
1391
89.45 %
91
5.85 %
74
4.76 %
11
0.71 %
SER-FLEXI
2
177
0.08 %
26
14.69 %
98
55.37 %
60
33.90 %
53
29.94 %
0
0.00 %
S Wales
PAR-IR-SEV
3
23
0.01 %
6
26.09 %
16
69.57 %
1
4.35 %
1
4.35 %
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-PERSIS
2
240
0.11 %
21
8.75 %
203
84.58 %
16
6.67 %
16
6.67 %
0
0.00 %
PAR-RAPID
2
3
0.00 %
0
0.00 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
28
0.01 %
4
14.29 %
22
78.57 %
1
3.57 %
1
3.57 %
1
3.57 %
W Glamorgan
PAR-OTHER
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
3
6
0.00 %
2
33.33 %
4
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-OTHER
3
338
0.16 %
10
2.96 %
321
94.97 %
10
2.96 %
7
2.07 %
0
0.00 %
PAR-PERSIS
2
2
0.00 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
3
6
0.00 %
4
66.67 %
1
16.67 %
1
16.67 %
1
16.67 %
0
0.00 %
PAR-RECUR
2
63
0.03 %
4
6.35 %
57
90.48 %
2
3.17 %
2
3.17 %
0
0.00 %
Ceredigion
PAR-IR-EX
2
36
0.02 %
27
75.00 %
9
25.00 %
1
2.78 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
3
3
0.00 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
6
12
0.01 %
5
41.67 %
3
25.00 %
3
25.00 %
3
25.00 %
1
8.33 %
Mid Glamorgan
PAR-IR-SEV
3
12
0.01 %
3
25.00 %
6
50.00 %
3
25.00 %
3
25.00 %
0
0.00 %
PAR-PERSIS
3
50
0.02 %
1
2.00 %
36
72.00 %
14
28.00 %
13
26.00 %
0
0.00 %
PAR-RAPID
1
2
0.00 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
88
0.04 %
3
3.41 %
83
94.32 %
3
3.41 %
2
2.27 %
0
0.00 %
NE Wales
PAR-IR-EX
22
54
0.03 %
15
27.78 %
35
64.81 %
4
7.41 %
4
7.41 %
0
0.00 %
PAR-IR-SEV
51
246
0.11 %
68
27.64 %
166
67.48 %
12
4.88 %
12
4.88 %
0
0.00 %
PAR-NEW-IN
82
5,664
2.64 %
178
3.14 %
5168
91.24 %
386
6.81 %
304
5.37 %
14
0.25 %
PAR-OTHER
5
223
0.10 %
2
0.90 %
214
95.96 %
8
3.59 %
7
3.14 %
0
0.00 %
PAR-PERSIS
32
2,511
1.17 %
128
5.10 %
2286
91.04 %
108
4.30 %
88
3.50 %
9
0.36 %
PAR-RAPID
12
24
0.01 %
6
25.00 %
18
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
8
719
0.34 %
19
2.64 %
650
90.40 %
52
7.23 %
50
6.95 %
0
0.00 %
SER-FLEXI
8
786
0.37 %
42
5.34 %
714
90.84 %
39
4.96 %
30
3.82 %
0
0.00 %
Powys
PAR-IR-SEV
9
43
0.02 %
10
23.26 %
33
76.74 %
1
2.33 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
23
3,703
1.73 %
130
3.51 %
3452
93.22 %
150
4.05 %
114
3.08 %
7
0.19 %
PAR-OTHER
1
2
0.00 %
0
0.00 %
2
100.00 %
1
50.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
5
29
0.01 %
9
31.03 %
17
58.62 %
3
10.34 %
3
10.34 %
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 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RECUR
8
714
0.33 %
31
4.34 %
649
90.90 %
42
5.88 %
33
4.62 %
1
0.14 %
S Glamorgan
PAR-RAPID
7
26
0.01 %
8
30.77 %
16
61.54 %
3
11.54 %
2
7.69 %
0
0.00 %
SER-FLEXI
1
75
0.03 %
24
32.00 %
49
65.33 %
2
2.67 %
2
2.67 %
0
0.00 %
Wales - Low TB
Conwy
PAR-NEW-IN
1
28
0.01 %
0
0.00 %
28
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Gwynedd
PAR-IR-EX
3
6
0.00 %
1
16.67 %
4
66.67 %
1
16.67 %
1
16.67 %
0
0.00 %
PAR-IR-SEV
4
15
0.01 %
6
40.00 %
8
53.33 %
1
6.67 %
1
6.67 %
0
0.00 %
PAR-NEW-IN
68
4,028
1.88 %
146
3.62 %
3632
90.17 %
295
7.32 %
243
6.03 %
7
0.17 %
PAR-RAPID
5
6
0.00 %
0
0.00 %
3
50.00 %
3
50.00 %
3
50.00 %
0
0.00 %
PAR-RECUR
1
18
0.01 %
0
0.00 %
18
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
5
20
0.01 %
5
25.00 %
13
65.00 %
3
15.00 %
2
10.00 %
0
0.00 %
NE Wales
PAR-IR-EX
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
12
81
0.04 %
30
37.04 %
47
58.02 %
4
4.94 %
4
4.94 %
0
0.00 %
PAR-NEW-IN
39
3,902
1.82 %
106
2.72 %
3511
89.98 %
328
8.41 %
279
7.15 %
6
0.15 %
PAR-PERSIS
4
518
0.24 %
22
4.25 %
473
91.31 %
24
4.63 %
21
4.05 %
2
0.39 %
PAR-RAPID
3
11
0.01 %
3
27.27 %
6
54.55 %
2
18.18 %
2
18.18 %
0
0.00 %
PAR-RECUR
3
191
0.09 %
4
2.09 %
166
86.91 %
20
10.47 %
20
10.47 %
1
0.52 %
SER-FLEXI
5
492
0.23 %
44
8.94 %
411
83.54 %
41
8.33 %
37
7.52 %
0
0.00 %
Wales
1498
70247
32.77 %
5177
7.37 %
61592
87.68 %
3986
5.67 %
3194
4.55 %
285
0.41 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
1
97
0.05 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
97
100.00 %
Ayrshire
PAR-NEW-IN
5
840
0.39 %
37
4.40 %
777
92.50 %
25
2.98 %
22
2.62 %
4
0.48 %
Dumfries & G
PAR-NEW-IN
6
646
0.30 %
15
2.32 %
523
80.96 %
23
3.56 %
15
2.32 %
93
14.40 %
Kirkcudbright
PAR-NEW-IN
10
3,147
1.47 %
75
2.38 %
2945
93.58 %
168
5.34 %
125
3.97 %
2
0.06 %
West lothian
PAR-NEW-IN
1
27
0.01 %
0
0.00 %
16
59.26 %
11
40.74 %
11
40.74 %
0
0.00 %
Wigtown
PAR-NEW-IN
11
1,752
0.82 %
40
2.28 %
1591
90.81 %
156
8.90 %
119
6.79 %
2
0.11 %
Scotland
34
6509
3.04 %
167
2.57 %
5852
89.91 %
383
5.88 %
292
4.49 %
198
3.04 %
Grand Total
Sum:
xx-xxxx-xxxx
11687
189197
13536
10986
2495
*For test criteria please refer to Operational notes.
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new
infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor,
SER-FRAUD: serial potential fraud, SER-OTHER: serial other, PAR-CHR: chronic breakdown herds - where VL reactors are disclosed at a 3rd or subsequent SI test, or SLH case after a 2nd or subsequent SI test
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is
possible for the laboratory to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative
result will be reported. Therefore, the total number of samples = the sum of positive, negative, resample and reject samples only.

Table 3a. Summary of IFN Gamma results by country and protocol December 2024
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
70
8520
99.8%
440
5.2%
7248
85.1%
410
4.8%
323
3.8%
509
6.0%
Serial/Extended
1
14
0.2%
4
28.6%
8
57.1%
2
14.3%
2
14.3%
0
0.0 %
Total
71
8534
100.0%
444
5.2%
7256
85.0%
412
4.8%
325
3.8%
509
6.0%
Scotland
Parallel
7
743
100.0%
15
2.0%
523
70.4%
23
3.1%
15
2.0%
190
25.6%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
7
743
100.0%
15
2.0%
523
70.4%
23
3.1%
15
2.0%
190
25.6%
Wales
Parallel
104
5390
99.8%
479
8.9%
4554
84.5%
342
6.3%
297
5.5%
60
1.1%
Serial/Extended
3
10
0.2%
4
40.0%
5
50.0%
4
40.0%
1
10.0%
0
0.0 %
Total
107
5400
100.0%
483
8.9%
4559
84.4%
346
6.4%
298
5.5%
60
1.1%
GB
Parallel
181
14653
99.8%
934
6.4%
12325
84.1%
775
5.3%
635
4.3%
759
5.2%
Serial/Extended
4
24
0.2%
8
33.3%
13
54.2%
6
25.0%
3
12.5%
0
0.0 %
Total
185
14677
100.0%
942
6.4%
12338
84.1%
781
5.3%
638
4.3%
759
5.2%
71.00
107.00
7.00
* 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 2024)
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
1033 133856
97.3%
6089
4.5% 118478
88.5%
8939
6.7%
7329
5.5%
1960
1.5%
Serial/Extended
52
3752
2.7%
254
6.8%
3275
87.3%
228
6.1%
171
4.6%
52
1.4%
Total
1085 137608
100.0%
6343
4.6% 121753
88.5%
9167
6.7%
7500
5.5%
2012
1.5%
Scotland
Parallel
34
6509
100.0%
167
2.6%
5852
89.9%
383
5.9%
292
4.5%
198
3.0%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
34
6509
100.0%
167
2.6%
5852
89.9%
383
5.9%
292
4.5%
198
3.0%
Wales
Parallel
1447
66364
94.5%
4884
7.4%
58290
87.8%
3652
5.5%
2911
4.4%
280
0.4%
Serial/Extended
51
3883
5.5%
293
7.5%
3302
85.0%
334
8.6%
283
7.3%
5
0.1%
Total
1498
70247
100.0%
5177
7.4%
61592
87.7%
3986
5.7%
3194
4.5%
285
0.4%
GB
Parallel
xx-xxxx-xxxx
96.4% 11140
5.4% 182620
88.3%
12974
6.3%
10532
5.1%
2438
1.2%
Serial/Extended
103
7635
3.6%
547
7.2%
6577
86.1%
562
7.4%
454
5.9%
57
0.7%
Total
xx-xxxx-xxxx
100.0% 11687
5.5% 189197
88.3%
13536
6.3%
10986
5.1%
2495
1.2%
#######
#######
34.00
* 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
4
24
0.2%
8
33.3%
13
54.2%
6
25.0 %
3
12.5 %
0
Parallel – chronic breakdown
5
868
5.9%
85
9.8%
760
87.6%
28
3.2 %
23
2.6 %
0
Parallel - IRs in Exit Strategy for persistent her
6
10
0.1%
3
30.0%
4
40.0%
3
30.0 %
3
30.0 %
0
Parallel New Infection
40
4141
28.2%
133
3.2%
3590
86.7%
256
6.2 %
218
5.3 %
200
4.8 %
Parallel - Other
9
1350
9.2%
81
6.0%
1227
90.9%
53
3.9 %
40
3.0 %
2
0.1 %
Parallel Persistent Infection
23
2427
16.5%
237
9.8%
1981
81.6%
165
6.8 %
149
6.1 %
60
2.5 %
Parallel - persistent infection cull area
4
82
0.6%
9
11.0%
64
78.0%
10
12.2 %
9
11.0 %
0
Parallel - Rapid Testing Two-times IRs
20
53
0.4%
19
35.8%
32
60.4%
2
3.8 %
2
3.8 %
0
Parallel - Recurrent breakdowns
45
5480
37.3%
275
5.0%
4532
82.7%
243
4.4 %
177
3.2 %
496
9.1 %
Parallel - severe IRs - in persistent herds
29
242
1.6%
92
38.0%
135
55.8%
15
6.2 %
14
5.8 %
1
0.4 %
Total
185
14677
100.0%
942
6.4%
12338
84.1%
781
5.3 %
638
4.3 %
759
5.2 %
Table 4a. Summaryof IFN Gamma results by submission reason (December 2024)
England - HRA
Extended Flexible IFN-GAMMA test
1
14
0.1%
4
28.6%
8
57.1%
2
14.3 %
2
14.3 %
0
Parallel – chronic breakdown
5
868
5.9%
85
9.8%
760
87.6%
28
3.2 %
23
2.6 %
0
Parallel - Other
1
134
0.9%
18
13.4%
115
85.8%
5
3.7 %
1
0.7 %
0
Parallel Persistent Infection
2
74
0.5%
9
12.2%
63
85.1%
4
5.4 %
2
2.7 %
0
Parallel - persistent infection cull area
3
9
0.1%
0
0.0 %
7
77.8%
2
22.2 %
2
22.2 %
0
Parallel - Recurrent breakdowns
23
3473
23.7%
164
4.7%
2781
80.1%
128
3.7 %
88
2.5 %
440
12.7 %
England - HRA
35
4572
31.2%
280
6.1%
3734
81.7%
169
3.7 %
118
2.6 %
440
9.6 %
England - Edge
Parallel New Infection
14
1842
12.6%
56
3.0%
xx-xxxx-xxxx
91.4%
102
5.5 %
95
5.2 %
8
0.4 %
Parallel - Other
1
294
2.0%
18
6.1%
270
91.8%
7
2.4 %
5
1.7 %
1
0.3 %
Parallel Persistent Infection
1
14
0.1%
0
0.0 %
0
0.0 %
0
0
14
100.0 %
Parallel - persistent infection cull area
1
73
0.5%
9
12.3%
57
78.1%
8
11.0 %
7
9.6 %
0
Parallel - Recurrent breakdowns
8
398
2.7%
25
6.3%
317
79.6%
16
4.0 %
12
3.0 %
44
11.1 %
England - Edge
25
2621
17.9%
108
4.1%
2327
88.8%
133
5.1 %
119
4.5 %
67
2.6 %
England - LRA
Parallel New Infection
11
1341
9.1%
56
4.2%
1195
89.1%
110
8.2 %
88
6.6 %
2
0.1 %
England - LRA
11
1341
9.1%
56
4.2%
1195
89.1%
110
8.2 %
88
6.6 %
2
0.1 %
Wales - High TB
Extended Flexible IFN-GAMMA test
2
9
0.1%
4
44.4%
4
44.4%
4
44.4 %
1
11.1 %
0
Parallel - IRs in Exit Strategy for persistent her
2
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Parallel - Other
6
921
6.3%
45
4.9%
841
91.3%
41
4.5 %
34
3.7 %
1
0.1 %
Parallel Persistent Infection
17
1851
12.6%
210
11.3%
1475
79.7%
133
7.2 %
122
6.6 %
44
2.4 %
Parallel - Rapid Testing Two-times IRs
16
41
0.3%
12
29.3%
28
68.3%
1
2.4 %
1
2.4 %
0
Parallel - Recurrent breakdowns
11
1501
10.2%
85
5.7%
1333
88.8%
94
6.3 %
72
4.8 %
11
0.7 %
Parallel - severe IRs - in persistent herds
24
230
1.6%
87
37.8%
128
55.7%
15
6.5 %
14
6.1 %
1
0.4 %
Wales - High TB
78
4555
31.0%
443
9.7%
3811
83.7%
288
6.3 %
244
5.4 %
57
1.3 %
Wales - Intermediate TB
Parallel - IRs in Exit Strategy for persistent her
4
8
0.1%
3
37.5%
2
25.0%
3
37.5 %
3
37.5 %
0
Parallel New Infection
5
175
1.2%
5
2.9%
151
86.3%
20
11.4 %
19
10.9 %
0
Parallel - Other
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Parallel Persistent Infection
1
29
0.2%
1
3.4%
23
79.3%
5
17.2 %
5
17.2 %
0
Parallel - Rapid Testing Two-times IRs
3
10
0.1%
7
70.0%
2
20.0%
1
10.0 %
1
10.0 %
0
Parallel - Recurrent breakdowns
1
88
0.6%
0
0.0 %
83
94.3%
4
4.5 %
4
4.5 %
1
1.1 %
Parallel - severe IRs - in persistent herds
4
10
0.1%
3
30.0%
7
70.0%
0
0
0
Wales - Intermediate TB
19
321
2.2%
19
5.9%
269
83.8%
33
10.3 %
32
10.0 %
1
0.3 %
Wales - Low TB
Extended Flexible IFN-GAMMA test
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Parallel New Infection
3
40
0.3%
1
2.5%
38
95.0%
1
2.5 %
1
2.5 %
0
Parallel Persistent Infection
2
459
3.1%
17
3.7%
420
91.5%
23
5.0 %
20
4.4 %
2
0.4 %
Parallel - Rapid Testing Two-times IRs
1
2
0.0%
0
0.0 %
2
100.0%
0
0
0
Parallel - Recurrent breakdowns
2
20
0.1%
1
5.0%
18
90.0%
1
5.0 %
1
5.0 %
0
Parallel - severe IRs - in persistent herds
1
2
0.0%
2
100.0%
0
0.0 %
0
0
0
Wales - Low TB
10
524
3.6%
21
4.0%
479
91.4%
25
4.8 %
22
4.2 %
2
0.4 %
Scotland - Scotland
Parallel New Infection
7
743
5.1%
15
2.0%
523
70.4%
23
3.1 %
15
2.0 %
190
25.6 %
Scotland - Scotland
7
743
5.1%
15
2.0%
523
70.4%
23
3.1 %
15
2.0 %
190
25.6 %

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
97
7363
3.4%
546
7.4%
6313
85.7%
553
7.5 %
448
6.1 %
56
0.8 %
Parallel – chronic breakdown
28
2498
1.2%
184
7.4%
2190
87.7%
147
5.9 %
123
4.9 %
1
0.0 %
Parallel - Herd or Group Slaughter
6
161
0.1%
12
7.5%
135
83.9%
15
9.3 %
14
8.7 %
0
Parallel - IRs in Exit Strategy for persistent herds
96
427
0.2%
181
42.4%
228
53.4%
24
5.6 %
18
4.2 %
0
Parallel New Infection
500
50965
23.8%
1620
3.2%
45754
89.8%
3607
7.1 %
2955
5.8 %
636
1.2 %
Parallel - new infection cull area
8
397
0.2%
26
6.5%
345
86.9%
31
7.8 %
26
6.5 %
0
Parallel - Other
113
10349
4.8%
813
7.9%
9084
87.8%
567
5.5 %
446
4.3 %
6
0.1 %
Parallel Persistent Infection
305
36356
17.0%
2399
6.6%
32068
88.2%
2079
5.7 %
1665
4.6 %
224
0.6 %
Parallel - persistent infection cull area
40
5496
2.6%
233
4.2%
4455
81.1%
398
7.2 %
312
5.7 %
496
9.0 %
Parallel - Rapid Testing Two-times IRs
258
807
0.4%
276
34.2%
499
61.8%
40
5.0 %
31
3.8 %
1
0.1 %
Parallel - Recurrent breakdowns
738
95624
44.6%
4251
4.4%
85512
89.4%
5894
6.2 %
4794
5.0 %
1067
1.1 %
Parallel - severe IRs - in persistent herds
422
3649
1.7%
1145
31.4%
2350
64.4%
172
4.7 %
148
4.1 %
7
0.2 %
Serial - Other
5
268
0.1%
1
0.4%
260
97.0%
9
3.4 %
6
2.2 %
1
0.4 %
Serial - Suspected NSR Herd
1
4
0.0%
0
0.0 %
4
100.0%
0
0
0
Total
xx-xxxx-xxxx
100.0%
11687
5.5%
189197
88.3%
13536
6.3 %
10986
5.1 %
2495
1.2 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2024)
England - HRA
Extended Flexible IFN-GAMMA test
32
1708
0.8%
201
11.8%
1414
82.8%
116
6.8 %
92
5.4 %
1
0.1 %
Parallel – chronic breakdown
24
2148
1.0%
155
7.2%
1883
87.7%
128
6.0 %
109
5.1 %
1
0.0 %
Parallel - new infection cull area
6
382
0.2%
26
6.8%
332
86.9%
29
7.6 %
24
6.3 %
0
Parallel - Other
40
3962
1.8%
230
5.8%
3491
88.1%
295
7.4 %
239
6.0 %
2
0.1 %
Parallel Persistent Infection
56
9023
4.2%
662
7.3%
7878
87.3%
605
6.7 %
477
5.3 %
6
0.1 %
Parallel - persistent infection cull area
30
3748
1.7%
157
4.2%
2837
75.7%
305
8.1 %
258
6.9 %
496
13.2 %
Parallel - Recurrent breakdowns
493
71022
33.1%
3189
4.5%
63188
89.0%
4509
6.3 %
3668
5.2 %
977
1.4 %
England - Edge
Extended Flexible IFN-GAMMA test
8
1397
0.7%
47
3.4%
1283
91.8%
92
6.6 %
67
4.8 %
0
Parallel – chronic breakdown
4
350
0.2%
29
8.3%
307
87.7%
19
5.4 %
14
4.0 %
0
Parallel - Herd or Group Slaughter
3
89
0.0%
6
6.7%
74
83.1%
10
11.2 %
9
10.1 %
0
Parallel New Infection
173
17860
8.3%
631
3.5%
15861
88.8%
1558
8.7 %
1311
7.3 %
57
0.3 %
Parallel - new infection cull area
2
15
0.0%
0
0.0 %
13
86.7%
2
13.3 %
2
13.3 %
0

Table 4b. Summary of IFN Gamma results by submission reason (Total 2024) Cont.
Parallel - Other
22
2656
1.2%
167
6.3%
2392
90.1%
116
4.4 %
96
3.6 %
1
0.0 %
Parallel Persistent Infection
24
3462
1.6%
179
5.2%
3011
87.0%
309
8.9 %
258
7.5 %
14
0.4 %
Parallel - persistent infection cull area
9
1744
0.8%
76
4.4%
1615
92.6%
92
5.3 %
53
3.0 %
0
Parallel - Recurrent breakdowns
65
8010
3.7%
316
3.9%
7239
90.4%
448
5.6 %
396
4.9 %
59
0.7 %
England - LRA
Extended Flexible IFN-GAMMA test
6
375
0.2%
5
1.3%
314
83.7%
11
2.9 %
6
1.6 %
50
13.3 %
Parallel New Infection
79
9250
4.3%
261
2.8%
8231
89.0%
505
5.5 %
411
4.4 %
347
3.8 %
Parallel Persistent Infection
2
131
0.1%
5
3.8%
123
93.9%
8
6.1 %
3
2.3 %
0
Parallel - persistent infection cull area
1
4
0.0%
0
0.0 %
3
75.0%
1
25.0 %
1
25.0 %
0
Serial - Other
5
268
0.1%
1
0.4%
260
97.0%
9
3.4 %
6
2.2 %
1
0.4 %
Serial - Suspected NSR Herd
1
4
0.0%
0
0.0 %
4
100.0%
0
0
0
England
1085 137608
64.2%
6343
4.6%
121753
88.5%
9167
6.7 %
7500
5.5 %
2012
1.5 %
Wales - High TB
Extended Flexible IFN-GAMMA test
32
2510
1.2%
178
7.1%
2115
84.3%
249
9.9 %
212
8.4 %
5
0.2 %
Parallel - Herd or Group Slaughter
3
72
0.0%
6
8.3%
61
84.7%
5
6.9 %
5
6.9 %
0
Parallel - IRs in Exit Strategy for persistent herd
68
330
0.2%
138
41.8%
179
54.2%
18
5.5 %
13
3.9 %
0
Parallel New Infection
1
21
0.0%
1
4.8%
19
90.5%
2
9.5 %
1
4.8 %
0
Parallel - Other
42
3168
1.5%
404
12.8%
2664
84.1%
137
4.3 %
97
3.1 %
3
0.1 %
Parallel Persistent Infection
182
20659
9.6%
1401
6.8%
18260
88.4%
1011
4.9 %
805
3.9 %
193
0.9 %
Parallel - Rapid Testing Two-times IRs
216
691
0.3%
241
34.9%
433
62.7%
25
3.6 %
17
2.5 %
0
Parallel - Recurrent breakdowns
156
14799
6.9%
685
4.6%
13462
91.0%
818
5.5 %
623
4.2 %
29
0.2 %
Parallel - severe IRs - in persistent herds
340
3249
1.5%
1027
31.6%
2088
64.3%
151
4.6 %
128
3.9 %
7
0.2 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
9
861
0.4%
66
7.7%
763
88.6%
41
4.8 %
32
3.7 %
0
Parallel - IRs in Exit Strategy for persistent herd
24
90
0.0%
42
46.7%
44
48.9%
5
5.6 %
4
4.4 %
0
Parallel New Infection
105
9367
4.4%
308
3.3%
8620
92.0%
536
5.7 %
418
4.5 %
21
0.2 %
Parallel - Other
9
563
0.3%
12
2.1%
537
95.4%
19
3.4 %
14
2.5 %
0
Parallel Persistent Infection
37
2563
1.2%
130
5.1%
2323
90.6%
122
4.8 %
101
3.9 %
9
0.4 %
Parallel - Rapid Testing Two-times IRs
34
99
0.0%
32
32.3%
57
57.6%
10
10.1 %
9
9.1 %
1
1.0 %
Parallel - Recurrent breakdowns
20
1584
0.7%
57
3.6%
1439
90.8%
99
6.3 %
87
5.5 %
1
0.1 %
Parallel - severe IRs - in persistent herds
66
304
0.1%
82
27.0%
207
68.1%
16
5.3 %
15
4.9 %
0
Wales - Low TB
Extended Flexible IFN-GAMMA test
10
512
0.2%
49
9.6%
424
82.8%
44
8.6 %
39
7.6 %
0
Parallel - IRs in Exit Strategy for persistent herd
4
7
0.0%
1
14.3%
5
71.4%
1
14.3 %
1
14.3 %
0
Parallel New Infection
108
7958
3.7%
252
3.2%
7171
90.1%
623
7.8 %
522
6.6 %
13
0.2 %
Parallel Persistent Infection
4
518
0.2%
22
4.2%
473
91.3%
24
4.6 %
21
4.1 %
2
0.4 %
Parallel - Rapid Testing Two-times IRs
8
17
0.0%
3
17.6%
9
52.9%
5
29.4 %
5
29.4 %
0

Table 4b. Summary of IFN Gamma results by submission reason (Total 2024) Cont.
Parallel - Recurrent breakdowns
4
209
0.1%
4
1.9%
184
88.0%
20
9.6 %
20
9.6 %
1
0.5 %
Parallel - severe IRs - in persistent herds
16
96
0.0%
36
37.5%
55
57.3%
5
5.2 %
5
5.2 %
0
Wales
1498
70247
32.8%
5177
7.4%
61592
87.7%
3986
5.7 %
3194
4.5 %
285
0.4 %
Scotland - Scotland
Parallel New Infection
34
6509
3.0%
167
2.6%
5852
89.9%
383
5.9 %
292
4.5 %
198
3.0 %
Scotland
34
6509
3.0%
167
2.6%
5852
89.9%
383
5.9 %
292
4.5 %
198
3.0 %

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
2024 January
234
21995
171
1438
1
26
0
0
0
0
54
3
1
6
0
1254
1
91
0
1
February
257
20510
159
1189
13
0
0
0
0
31
1
0
12
0
1021
1
109
1
0
March
215
19876
142
1054
15
0
0
0
0
70
2
0
26
0
879
0
60
0
0
April
237
18969
146
1092
4
0
0
0
0
44
4
0
11
0
958
0
71
0
0
May
207
15411
129
733
0
0
0
0
0
11
3
0
9
0
657
0
53
0
0
June
197
18101
133
797
9
0
0
0
0
32
1
0
19
0
720
0
2
0
14
July
223
19494
124
825
7
0
0
0
0
25
4
0
20
0
753
1
7
1
6
August
197
14635
123
639
25
0
0
0
0
21
1
0
17
1
551
1
21
0
0
September
174
11490
104
803
20
0
0
0
0
88
7
0
8
2
673
0
5
0
0
October
243
20535
159
1136
12
0
0
0
0
35
1
0
26
11
1034
0
19
0
0
November
248
18671
155
1039
2
16
0
0
0
0
79
0
7
11
7
882
6
29
0
0
December
185
14677
117
942
479
0
0
0
0
34
0
19
1
0
396
13
0
0
0
Totals (last
12 months)
2617
214364
1662
11687
3
626
0
0
0
0
524
27
27
166
21
9778
23
467
2
21
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
1085
137608
733
6343
344
0
0
0
0
443
7
15
85
3
5282
16
143
1
0
Scotland
34
6509
28
167
2
0
0
0
0
0
1
0
15
2
135
0
11
0
0
Wales
1498
70247
901
5177
280
0
0
0
0
81
19
12
66
16
4361
7
313
1
21
Totals
2617
214364
1662
11687
626
0
0
0
0
524
27
27
166
21
9778
23
467
2
21
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.
105
176
118
147
107
159
85
118
96
112
95
94
101
108
112
140
109
112
114
139
93
157
69
114
63
171
98
159
73
142
91
146
78
129
64
133
99
124
74
123
70
104
84
159
93
155
68
117
0
50
100
150
200
250
300
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2023
2024
IFNg Positive herds
IFNg Negative herds
21877
1138
16071
1036
18641
867
15246
782
13167
582
15789
524
17758
597
19561
867
17206
638
17659
825
20756
1277
13035
892
20308
1434
18508
1189
18373
1054
17402
1092
14468
733
17182
797
18485
825
13771
639
10556
803
19096
1136
17063
1039
13367
941
0
5000
10000
15000
20000
25000
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2023
2024
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
10
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
2023
2024
%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
Wiltshire
Warks
Staffs
Shropshire
Pembs
NE Wales
Leics & Rut
Heref
Gwynedd
Gloucs
Dorset
Derbyshire
Corn & Scilly
Ceredigion
Bucks
Avon
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during December 2024 (% submission per
County)
County
%Resampled %Retested
Argyll & Bute
Avon
4.08 %
5.14 %
Berks
4.61 %
4.86 %
Bucks
12.00 %
12.40 %
Carms
5.98 %
6.80 %
Ceredigion
5.84 %
6.51 %
Cheshire
4.17 %
8.33 %
Corn & Scilly
3.86 %
5.96 %
Cumbria
7.09 %
8.35 %
Derbyshire
1.89 %
2.52 %
Devon
4.02 %
4.33 %
Dorset
Dumfries & G
2.32 %
3.56 %
Gloucs
5.67 %
6.19 %
Gwent
3.60 %
4.79 %
Gwynedd
2.33 %
2.33 %
Hampshire
Heref
6.43 %
10.00 %
Lancashire
15.38 %
15.38 %
Leics & Rut
4.55 %
9.09 %
Lincs
5.58 %
7.81 %
NE Wales
6.18 %
6.76 %
Oxon
7.83 %
8.70 %
Pembs
4.97 %
6.08 %
Powys
6.67 %
7.54 %
Shropshire
14.29 %
14.29 %
Somerset excl
1.58 %
2.26 %
Staffs
1.23 %
3.40 %
S Wales
33.33 %
33.33 %
Warks
2.85 %
3.70 %
W Glamorgan
Wiltshire

Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
8408
443
5.3%
8534
444
5.2%
Wales
5264
483
9.2%
5400
483
8.9%
Scotland
636
15
2.4%
743
15
2.0%
GB
14308
941
6.6%
14677
942
6.4%
Table 6a (i): Number of animals and submissions tested in December 2024
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
126616
6338
5.0%
137608
6343
4.6%
Wales
65676
5175
7.9%
70247
5177
7.4%
Scotland
6181
167
2.7%
6509
167
2.6%
GB
198464
11680
5.9%
214364
11687
5.5%
Table 6b (i): Number of animals and submissions tested in 2024 Up to end of December
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
9286
496
5.3%
9342
496
5.3%
Wales
4342
389
9.0%
4395
389
8.9%
Scotland
300
7
2.3%
300
7
2.3%
GB
13927
892
6.4%
14037
892
6.4%
Table 6a (ii): Number of animals and submissions tested in December 2023
Table 6b (ii): Number of animals and submissions tested in 2023 Up to end of December
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
134758
6040
4.5%
144258
6041
4.2%
Wales
59206
3514
5.9%
63801
3514
5.5%
Scotland
7528
470
6.2%
11782
470
4.0%
GB
201474
10024
5.0%
219841
10025
4.6%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
Devon
PRV-SE
1
11
2
18.18 %
Dorset
PRV-SE
1
17
2
11.76 %
North Yorkshire
PRV-SE
1
15
0
0
Total
3
43
4
9.30 %
*SER-IOM: Serial High Specificity test – Isle of Man; PRV-SE: Private High Sensitivity test - England;
PRV-SP: Private High Specificity test – England
Table 7a Number of private samples December 2024
Table 7b Number of private samples 2024
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
Cornwall and Isles of Scilly
PRV-SE
2
19
0
0
PRV-SP
2
4
0
0
Devon
PRV-SE
6
149
11
7.38 %
PRV-SP
1
2
0
0
Dorset
PRV-SE
1
17
2
11.76 %
PRV-SP
1
1
0
0
East Sussex
PRV-SP
1
1
0
0
Gloucestershire
PRV-SE
1
78
7
8.97 %
North Yorkshire
PRV-SE
1
15
0
0
PRV-SP
1
1
0
0
Oxfordshire
PRV-SE
1
5
0
0
Shropshire
PRV-SP
1
4
0
0
Wiltshire
PRV-SP
1
1
0
0
Worcestershire
PRV-SE
1
1
0
0
PRV-SP
1
1
0
0
Total
22
299
20
6.69 %

Country
County
Test Reason
Num
Submissions
Num Samples
Tested
Num Positive
Samples
% Positive
England
Derbyshire
BOV-OTHER
2
294
7
2.4%
Greater London
BOV-P
1
163
5
3.1%
England
3
457
12
2.6%
Wales
Ceredigion
BOV-IR-C
2
25
16
64.0%
North East Wales
BOV-IR-C
3
46
5
10.9%
BOV-IR-EX
1
2
1
50.0%
BOV-OTHER
1
43
11
25.6%
Pembrokeshire
BOV-IR-C
16
184
48
26.1%
BOV-IR-EX
2
8
4
50.0%
Powys
BOV-IR-C
4
46
6
13.0%
South Wales
BOV-IR-C
1
2
1
50.0%
BOV-OTHER
1
51
3
5.9%
Wales
31
407
95
23.3%
All GB
34
864
107
12.4 %
Table 8a Number of Cattle Antibody Tests December 2024
Table 8b Number of Cattle Antibody Tests 2024
Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
England
Cheshire
BOV-P
1
7
1
14.3%
Cumbria
BOV-OTHER
5
1,043
55
5.3%
Derbyshire
BOV-OTHER
2
294
7
2.4%
Devon
BOV-OTHER
3
422
27
6.4%
Greater London
BOV-P
1
163
5
3.1%
Northern Somerset &
South
Gloucestershire
BOV-P
1
33
1
3.0%
Oxfordshire
BOV-P
1
114
10
8.8%
Somerset excl North
BOV-P
1
69
1
1.4%
England
15
2,145
107
5.0%
Wales
Carmarthenshire
BOV-IR-C
53
470
95
20.2%
BOV-IR-EX
8
34
10
29.4%
BOV-OTHER
2
215
13
6.0%
BOV-P
1
57
0
0
Ceredigion
BOV-IR-C
27
224
76
33.9%
BOV-IR-EX
8
65
17
26.2%
North East Wales
BOV-IR-C
39
292
62
21.2%
BOV-IR-EX
8
27
6
22.2%
BOV-OTHER
6
476
26
5.5%
BOV-P
3
111
7
6.3%
North West Wales
BOV-IR-C
1
5
0
0
BOV-OTHER
1
9
0
0
Pembrokeshire
BOV-IR-C
193
2,256
450
19.9%
BOV-IR-EX
30
155
58
37.4%
BOV-OTHER
5
233
10
4.3%
BOV-P
5
307
22
7.2%
Powys
BOV-IR-C
43
468
57
12.2%

Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
BOV-IR-EX
9
91
10
11.0%
South Wales
BOV-IR-C
17
150
32
21.3%
BOV-IR-EX
1
16
4
25.0%
BOV-OTHER
1
51
3
5.9%
BOV-P
2
384
10
2.6%
BOV-POSTM
1
75
19
25.3%
Wales
464
6,171
987
16.0%
All GB
479
8,316
1,094
13.2 %