Monthly Report: Surveillance Project SB4008 IFNg (TC0651 and TC0751) & Antibody (TC0077) tests for bovine tuberculosis-January 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 09 February 2024
209
1st - 31st January 2024

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
January
2024
%
Total 2024
%
Submissions
234
234
Samples
Total (%)
21995
100.00 %
21995
100.00 %
England
11936
54.27 %
11936
54.27 %
Wales
10032
45.61 %
10032
45.61 %
Scotland
27
0.12 %
27
0.12 %
Parallel Tests
PAR-CHR
410
1.86 %
410
1.86 %
PAR-CUL-N
331
1.50 %
331
1.50 %
PAR-CUL-P
899
4.09 %
899
4.09 %
PAR-HERD-S
9
0.04 %
9
0.04 %
PAR-IR-EX
56
0.25 %
56
0.25 %
PAR-IR-SEV
317
1.44 %
317
1.44 %
PAR-NEW-IN
3055
13.89 %
3055
13.89 %
PAR-OTHER
82
0.37 %
82
0.37 %
PAR-PERSIS
4709
21.41 %
4709
21.41 %
PAR-POSTM
0
0.00 %
PAR-RAPID
56
0.25 %
56
0.25 %
PAR-RECUR
11170
50.78 %
11170
50.78 %
Total(% of all samples)
21094
95.90 %
21094
95.90 %
Serial/Extended Tests
SER-ANOM
0
0.00 %
SER-FLEXI
653
2.97 %
653
2.97 %
SER-FRAUD
0
0.00 %
SER-NSR
0
0.00 %
SER-OTHER
248
1.13 %
248
1.13 %
Total(% of all samples)
901
4.10 %
901
4.10 %
Total
21995
100.00 %
21995
100.00 %
Retests
Total (% of all samples)
1357
6.17 %
1357
6.17 %
England
750
3.41 %
750
3.41 %
Wales
596
2.71 %
596
2.71 %
Scotland
11
0.05 %
11
0.05 %
Resamples
Total (% of all samples)
1154
5.25 %
1154
5.25 %
England
642
2.92 %
642
2.92 %
Wales
501
2.28 %
501
2.28 %
Scotland
11
0.05 %
11
0.05 %
Rejects
Total (% of all samples)
73
0.33 %
73
0.33 %
England
47
0.21 %
47
0.21 %
Wales
26
0.12 %
26
0.12 %
Scotland
0
0.00 %
Table 1. Monthly Totals for January 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-N
PAR-CUL-P
PAR-HERD-S
PAR-IR-EX
PAR-IR-SEV
PAR-NEW-IN
PAR-OTHER
PAR-PERSIS
PAR-RAPID
PAR-RECUR
SER-FLEXI
SER-OTHER
Breakdown of
Reason for
submission
PAR-CHR
410
1.9 %
PAR-CUL-N
331
1.5 %
PAR-CUL-P
899
4.1 %
PAR-HERD-S
9
0.0 %
PAR-IR-EX
56
0.3 %
PAR-IR-SEV
317
1.4 %
PAR-NEW-IN
3055
13.9 %
PAR-OTHER
82
0.4 %
PAR-PERSIS
4709
21.4 %
PAR-RAPID
56
0.3 %
PAR-RECUR
11170
50.8 %
SER-FLEXI
653
3.0 %
SER-OTHER
248
1.1 %
Total
21995
100.00 %
Figure 1. Number of samples submitted in each category during January 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
500
1000
1500
2000
2500
3000
3500
West lothian
S Glamorgan
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Staffs
Somerset excl N
Shropshire
Oxon
Notts
Northants
Norfolk
Lincs
Leics & Rut
Lancashire
Kent
Herts
Heref
Gloucs
E Sussex
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Bucks
Berks
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-HERD-S
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 January 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
500
1000
1500
2000
2500
3000
3500
West lothian
S Glamorgan
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Staffs
Somerset excl N
Shropshire
Oxon
Notts
Northants
Norfolk
Lincs
Leics & Rut
Lancashire
Kent
Herts
Heref
Gloucs
E Sussex
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Bucks
Berks
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-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-CHR
3
333
1.51 %
47
14.11 %
264
79.28 %
24
7.21 %
22
6.61 %
0
0.00 %
PAR-PERSIS
1
16
0.07 %
1
6.25 %
14
87.50 %
2
12.50 %
1
6.25 %
0
0.00 %
PAR-RECUR
2
288
1.31 %
12
4.17 %
251
87.15 %
28
9.72 %
25
8.68 %
0
0.00 %
Corn & Scilly
PAR-CUL-P
2
891
4.05 %
35
3.93 %
805
90.35 %
58
6.51 %
51
5.72 %
0
0.00 %
PAR-PERSIS
2
831
3.78 %
54
6.50 %
707
85.08 %
82
9.87 %
69
8.30 %
1
0.12 %
PAR-RECUR
7
401
1.82 %
34
8.48 %
324
80.80 %
43
10.72 %
41
10.22 %
2
0.50 %
Devon
PAR-CUL-N
2
189
0.86 %
12
6.35 %
165
87.30 %
13
6.88 %
12
6.35 %
0
0.00 %
PAR-CUL-P
2
8
0.04 %
0
0.00 %
6
75.00 %
2
25.00 %
2
25.00 %
0
0.00 %
PAR-RECUR
9
585
2.66 %
25
4.27 %
528
90.26 %
36
6.15 %
32
5.47 %
0
0.00 %
Dorset
PAR-RECUR
5
1,300
5.91 %
94
7.23 %
1155
88.85 %
54
4.15 %
49
3.77 %
2
0.15 %
SER-FLEXI
3
53
0.24 %
10
18.87 %
42
79.25 %
1
1.89 %
1
1.89 %
0
0.00 %
Gloucs
PAR-RECUR
2
264
1.20 %
15
5.68 %
243
92.05 %
8
3.03 %
6
2.27 %
0
0.00 %
Heref
PAR-CUL-N
1
142
0.65 %
13
9.15 %
119
83.80 %
12
8.45 %
10
7.04 %
0
0.00 %
PAR-RECUR
6
988
4.49 %
69
6.98 %
870
88.06 %
62
6.28 %
49
4.96 %
0
0.00 %
Shropshire
PAR-RECUR
4
1,051
4.78 %
60
5.71 %
937
89.15 %
54
5.14 %
43
4.09 %
11
1.05 %
Somerset excl N
PAR-CHR
1
77
0.35 %
4
5.19 %
72
93.51 %
2
2.60 %
1
1.30 %
0
0.00 %
PAR-RECUR
4
266
1.21 %
17
6.39 %
238
89.47 %
13
4.89 %
11
4.14 %
0
0.00 %
Staffs
PAR-PERSIS
1
219
1.00 %
48
21.92 %
155
70.78 %
24
10.96 %
16
7.31 %
0
0.00 %
PAR-RECUR
4
470
2.14 %
16
3.40 %
427
90.85 %
25
5.32 %
23
4.89 %
4
0.85 %
Wiltshire
PAR-RECUR
5
1,142
5.19 %
32
2.80 %
1075
94.13 %
43
3.77 %
35
3.06 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
1
296
1.35 %
17
5.74 %
269
90.88 %
11
3.72 %
7
2.36 %
3
1.01 %
Bucks
PAR-RECUR
3
220
1.00 %
16
7.27 %
188
85.45 %
18
8.18 %
16
7.27 %
0
0.00 %
Derbyshire
PAR-RECUR
3
459
2.09 %
9
1.96 %
419
91.29 %
33
7.19 %
29
6.32 %
2
0.44 %
E Sussex
PAR-NEW-IN
2
382
1.74 %
24
6.28 %
341
89.27 %
19
4.97 %
16
4.19 %
1
0.26 %
Leics & Rut
PAR-NEW-IN
1
59
0.27 %
3
5.08 %
54
91.53 %
3
5.08 %
2
3.39 %
0
0.00 %
Northants
PAR-NEW-IN
2
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
0
0.00 %
Table 2a. Summary by County for January 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 January 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
Notts
PAR-NEW-IN
1
39
0.18 %
0
0.00 %
37
94.87 %
3
7.69 %
2
5.13 %
0
0.00 %
Oxon
PAR-HERD-S
1
9
0.04 %
0
0.00 %
7
77.78 %
2
22.22 %
2
22.22 %
0
0.00 %
PAR-RECUR
1
40
0.18 %
0
0.00 %
39
97.50 %
1
2.50 %
1
2.50 %
0
0.00 %
England - LRA
Beds
PAR-NEW-IN
2
33
0.15 %
2
6.06 %
9
27.27 %
5
15.15 %
5
15.15 %
17
51.52 %
Cumbria
PAR-NEW-IN
1
22
0.10 %
0
0.00 %
17
77.27 %
5
22.73 %
5
22.73 %
0
0.00 %
Herts
PAR-NEW-IN
2
203
0.92 %
10
4.93 %
180
88.67 %
13
6.40 %
13
6.40 %
0
0.00 %
Kent
SER-OTHER
2
248
1.13 %
1
0.40 %
240
96.77 %
9
3.63 %
6
2.42 %
1
0.40 %
Lancashire
PAR-NEW-IN
1
102
0.46 %
1
0.98 %
97
95.10 %
5
4.90 %
3
2.94 %
1
0.98 %
Lincs
PAR-NEW-IN
2
221
1.00 %
3
1.36 %
207
93.67 %
12
5.43 %
11
4.98 %
0
0.00 %
Norfolk
PAR-NEW-IN
2
87
0.40 %
7
8.05 %
54
62.07 %
24
27.59 %
24
27.59 %
2
2.30 %
England
93
11936
54.27 %
691
5.79 %
10556
88.44 %
750
6.28 %
642
5.38 %
47
0.39 %
Wales - High TB
Carms
PAR-IR-EX
2
7
0.03 %
0
0.00 %
6
85.71 %
1
14.29 %
1
14.29 %
0
0.00 %
PAR-IR-SEV
6
66
0.30 %
31
46.97 %
33
50.00 %
0
0.00 %
0
0.00 %
2
3.03 %
PAR-OTHER
1
12
0.05 %
1
8.33 %
11
91.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
4
544
2.47 %
69
12.68 %
440
80.88 %
41
7.54 %
35
6.43 %
0
0.00 %
PAR-RAPID
3
4
0.02 %
1
25.00 %
2
50.00 %
1
25.00 %
1
25.00 %
0
0.00 %
PAR-RECUR
3
1,940
8.82 %
40
2.06 %
1868
96.29 %
44
2.27 %
31
1.60 %
1
0.05 %
Ceredigion
PAR-IR-SEV
1
7
0.03 %
1
14.29 %
6
85.71 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
5
0.02 %
2
40.00 %
3
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Gwent
PAR-IR-SEV
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
72
0.33 %
8
11.11 %
63
87.50 %
1
1.39 %
1
1.39 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
89
0.40 %
1
1.12 %
78
87.64 %
11
12.36 %
10
11.24 %
0
0.00 %
Pembs
PAR-IR-EX
6
12
0.05 %
9
75.00 %
3
25.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
21
175
0.80 %
81
46.29 %
87
49.71 %
8
4.57 %
7
4.00 %
0
0.00 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
9
1,711
7.78 %
144
8.42 %
1460
85.33 %
125
7.31 %
104
6.08 %
3
0.18 %
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 January 2024 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RAPID
9
33
0.15 %
10
30.30 %
23
69.70 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
9
823
3.74 %
42
5.10 %
735
89.31 %
60
7.29 %
42
5.10 %
4
0.49 %
SER-FLEXI
1
467
2.12 %
30
6.42 %
393
84.15 %
48
10.28 %
44
9.42 %
0
0.00 %
Powys
PAR-IR-EX
2
16
0.07 %
4
25.00 %
11
68.75 %
1
6.25 %
1
6.25 %
0
0.00 %
PAR-IR-SEV
4
39
0.18 %
24
61.54 %
15
38.46 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
1
69
0.31 %
2
2.90 %
63
91.30 %
6
8.70 %
3
4.35 %
1
1.45 %
PAR-PERSIS
1
184
0.84 %
10
5.43 %
152
82.61 %
22
11.96 %
22
11.96 %
0
0.00 %
PAR-RAPID
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
8
634
2.88 %
43
6.78 %
560
88.33 %
34
5.36 %
29
4.57 %
2
0.32 %
Wales - Intermediate TB
Carms
PAR-PERSIS
2
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
3
0.01 %
1
33.33 %
1
33.33 %
1
33.33 %
1
33.33 %
0
0.00 %
Ceredigion
PAR-IR-EX
1
21
0.10 %
17
80.95 %
4
19.05 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-SEV
5
26
0.12 %
7
26.92 %
16
61.54 %
3
11.54 %
3
11.54 %
0
0.00 %
PAR-NEW-IN
11
1,273
5.79 %
46
3.61 %
1129
88.69 %
105
8.25 %
91
7.15 %
7
0.55 %
PAR-PERSIS
6
1,129
5.13 %
60
5.31 %
1026
90.88 %
42
3.72 %
37
3.28 %
6
0.53 %
PAR-RECUR
3
210
0.95 %
15
7.14 %
177
84.29 %
19
9.05 %
18
8.57 %
0
0.00 %
SER-FLEXI
2
128
0.58 %
21
xx-xxxx-xxxx %
100
78.13 %
8
6.25 %
7
5.47 %
0
0.00 %
Powys
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
1
46
0.21 %
1
2.17 %
42
91.30 %
3
6.52 %
3
6.52 %
0
0.00 %
S Glamorgan
PAR-RAPID
1
8
0.04 %
2
25.00 %
6
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Gwynedd
SER-FLEXI
1
5
0.02 %
2
40.00 %
3
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-NEW-IN
2
263
1.20 %
19
7.22 %
234
88.97 %
12
4.56 %
10
3.80 %
0
0.00 %
Wales
140
10032
45.61 %
747
7.45 %
8758
87.30 %
596
5.94 %
501
4.99 %
26
0.26 %
Scotland - Scotland
West lothian
PAR-NEW-IN
1
27
0.12 %
0
0.00 %
16
59.26 %
11
40.74 %
11
40.74 %
0
0.00 %
Scotland
1
27
0.12 %
0
0.00 %
16
59.26 %
11
40.74 %
11
40.74 %
0
0.00 %
Grand Total
Sum:
234
21995
1438
19330
1357
1154
73
*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
3
333
1.51 %
47
14.11 %
264
79.28 %
24
7.21 %
22
6.61 %
0
0.00 %
PAR-PERSIS
1
16
0.07 %
1
6.25 %
14
87.50 %
2
12.50 %
1
6.25 %
0
0.00 %
PAR-RECUR
2
288
1.31 %
12
4.17 %
251
87.15 %
28
9.72 %
25
8.68 %
0
0.00 %
Corn & Scilly
PAR-CUL-P
2
891
4.05 %
35
3.93 %
805
90.35 %
58
6.51 %
51
5.72 %
0
0.00 %
PAR-PERSIS
2
831
3.78 %
54
6.50 %
707
85.08 %
82
9.87 %
69
8.30 %
1
0.12 %
PAR-RECUR
7
401
1.82 %
34
8.48 %
324
80.80 %
43
10.72 %
41
10.22 %
2
0.50 %
Devon
PAR-CUL-N
2
189
0.86 %
12
6.35 %
165
87.30 %
13
6.88 %
12
6.35 %
0
0.00 %
PAR-CUL-P
2
8
0.04 %
0
0.00 %
6
75.00 %
2
25.00 %
2
25.00 %
0
0.00 %
PAR-RECUR
9
585
2.66 %
25
4.27 %
528
90.26 %
36
6.15 %
32
5.47 %
0
0.00 %
Dorset
PAR-RECUR
5
1,300
5.91 %
94
7.23 %
1155
88.85 %
54
4.15 %
49
3.77 %
2
0.15 %
SER-FLEXI
3
53
0.24 %
10
18.87 %
42
79.25 %
1
1.89 %
1
1.89 %
0
0.00 %
Gloucs
PAR-RECUR
2
264
1.20 %
15
5.68 %
243
92.05 %
8
3.03 %
6
2.27 %
0
0.00 %
Heref
PAR-CUL-N
1
142
0.65 %
13
9.15 %
119
83.80 %
12
8.45 %
10
7.04 %
0
0.00 %
PAR-RECUR
6
988
4.49 %
69
6.98 %
870
88.06 %
62
6.28 %
49
4.96 %
0
0.00 %
Shropshire
PAR-RECUR
4
1,051
4.78 %
60
5.71 %
937
89.15 %
54
5.14 %
43
4.09 %
11
1.05 %
Somerset excl N
PAR-CHR
1
77
0.35 %
4
5.19 %
72
93.51 %
2
2.60 %
1
1.30 %
0
0.00 %
PAR-RECUR
4
266
1.21 %
17
6.39 %
238
89.47 %
13
4.89 %
11
4.14 %
0
0.00 %
Staffs
PAR-PERSIS
1
219
1.00 %
48
21.92 %
155
70.78 %
24
10.96 %
16
7.31 %
0
0.00 %
PAR-RECUR
4
470
2.14 %
16
3.40 %
427
90.85 %
25
5.32 %
23
4.89 %
4
0.85 %
Wiltshire
PAR-RECUR
5
1,142
5.19 %
32
2.80 %
1075
94.13 %
43
3.77 %
35
3.06 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
1
296
1.35 %
17
5.74 %
269
90.88 %
11
3.72 %
7
2.36 %
3
1.01 %
Bucks
PAR-RECUR
3
220
1.00 %
16
7.27 %
188
85.45 %
18
8.18 %
16
7.27 %
0
0.00 %
Derbyshire
PAR-RECUR
3
459
2.09 %
9
1.96 %
419
91.29 %
33
7.19 %
29
6.32 %
2
0.44 %
E Sussex
PAR-NEW-IN
2
382
1.74 %
24
6.28 %
341
89.27 %
19
4.97 %
16
4.19 %
1
0.26 %
Leics & Rut
PAR-NEW-IN
1
59
0.27 %
3
5.08 %
54
91.53 %
3
5.08 %
2
3.39 %
0
0.00 %
Northants
PAR-NEW-IN
2
2
0.01 %
0
0.00 %
1
50.00 %
1
50.00 %
1
50.00 %
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
%
Notts
PAR-NEW-IN
1
39
0.18 %
0
0.00 %
37
94.87 %
3
7.69 %
2
5.13 %
0
0.00 %
Oxon
PAR-HERD-S
1
9
0.04 %
0
0.00 %
7
77.78 %
2
22.22 %
2
22.22 %
0
0.00 %
PAR-RECUR
1
40
0.18 %
0
0.00 %
39
97.50 %
1
2.50 %
1
2.50 %
0
0.00 %
England - LRA
Beds
PAR-NEW-IN
2
33
0.15 %
2
6.06 %
9
27.27 %
5
15.15 %
5
15.15 %
17
51.52 %
Cumbria
PAR-NEW-IN
1
22
0.10 %
0
0.00 %
17
77.27 %
5
22.73 %
5
22.73 %
0
0.00 %
Herts
PAR-NEW-IN
2
203
0.92 %
10
4.93 %
180
88.67 %
13
6.40 %
13
6.40 %
0
0.00 %
Kent
SER-OTHER
2
248
1.13 %
1
0.40 %
240
96.77 %
9
3.63 %
6
2.42 %
1
0.40 %
Lancashire
PAR-NEW-IN
1
102
0.46 %
1
0.98 %
97
95.10 %
5
4.90 %
3
2.94 %
1
0.98 %
Lincs
PAR-NEW-IN
2
221
1.00 %
3
1.36 %
207
93.67 %
12
5.43 %
11
4.98 %
0
0.00 %
Norfolk
PAR-NEW-IN
2
87
0.40 %
7
8.05 %
54
62.07 %
24
27.59 %
24
27.59 %
2
2.30 %
England
93
11936
54.27 %
691
5.79 %
10556
88.44 %
750
6.28 %
642
5.38 %
47
0.39 %
Wales - High TB
Carms
PAR-IR-EX
2
7
0.03 %
0
0.00 %
6
85.71 %
1
14.29 %
1
14.29 %
0
0.00 %
PAR-IR-SEV
6
66
0.30 %
31
46.97 %
33
50.00 %
0
0.00 %
0
0.00 %
2
3.03 %
PAR-OTHER
1
12
0.05 %
1
8.33 %
11
91.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
4
544
2.47 %
69
12.68 %
440
80.88 %
41
7.54 %
35
6.43 %
0
0.00 %
PAR-RAPID
3
4
0.02 %
1
25.00 %
2
50.00 %
1
25.00 %
1
25.00 %
0
0.00 %
PAR-RECUR
3
1,940
8.82 %
40
2.06 %
1868
96.29 %
44
2.27 %
31
1.60 %
1
0.05 %
Ceredigion
PAR-IR-SEV
1
7
0.03 %
1
14.29 %
6
85.71 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
5
0.02 %
2
40.00 %
3
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Gwent
PAR-IR-SEV
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
2
72
0.33 %
8
11.11 %
63
87.50 %
1
1.39 %
1
1.39 %
0
0.00 %
PAR-RAPID
1
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
2
89
0.40 %
1
1.12 %
78
87.64 %
11
12.36 %
10
11.24 %
0
0.00 %
Pembs
PAR-IR-EX
6
12
0.05 %
9
75.00 %
3
25.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-IR-SEV
21
175
0.80 %
81
46.29 %
87
49.71 %
8
4.57 %
7
4.00 %
0
0.00 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
9
1,711
7.78 %
144
8.42 %
1460
85.33 %
125
7.31 %
104
6.08 %
3
0.18 %
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-RAPID
9
33
0.15 %
10
30.30 %
23
69.70 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
9
823
3.74 %
42
5.10 %
735
89.31 %
60
7.29 %
42
5.10 %
4
0.49 %
SER-FLEXI
1
467
2.12 %
30
6.42 %
393
84.15 %
48
10.28 %
44
9.42 %
0
0.00 %
Powys
PAR-IR-EX
2
16
0.07 %
4
25.00 %
11
68.75 %
1
6.25 %
1
6.25 %
0
0.00 %
PAR-IR-SEV
4
39
0.18 %
24
61.54 %
15
38.46 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
1
69
0.31 %
2
2.90 %
63
91.30 %
6
8.70 %
3
4.35 %
1
1.45 %
PAR-PERSIS
1
184
0.84 %
10
5.43 %
152
82.61 %
22
11.96 %
22
11.96 %
0
0.00 %
PAR-RAPID
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RECUR
8
634
2.88 %
43
6.78 %
560
88.33 %
34
5.36 %
29
4.57 %
2
0.32 %
Wales - Intermediate TB
Carms
PAR-PERSIS
2
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
3
0.01 %
1
33.33 %
1
33.33 %
1
33.33 %
1
33.33 %
0
0.00 %
Ceredigion
PAR-IR-EX
1
21
0.10 %
17
80.95 %
4
19.05 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-IR-SEV
5
26
0.12 %
7
26.92 %
16
61.54 %
3
11.54 %
3
11.54 %
0
0.00 %
PAR-NEW-IN
11
1,273
5.79 %
46
3.61 %
1129
88.69 %
105
8.25 %
91
7.15 %
7
0.55 %
PAR-PERSIS
6
1,129
5.13 %
60
5.31 %
1026
90.88 %
42
3.72 %
37
3.28 %
6
0.53 %
PAR-RECUR
3
210
0.95 %
15
7.14 %
177
84.29 %
19
9.05 %
18
8.57 %
0
0.00 %
SER-FLEXI
2
128
0.58 %
21
xx-xxxx-xxxx %
100
78.13 %
8
6.25 %
7
5.47 %
0
0.00 %
Powys
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
1
46
0.21 %
1
2.17 %
42
91.30 %
3
6.52 %
3
6.52 %
0
0.00 %
S Glamorgan
PAR-RAPID
1
8
0.04 %
2
25.00 %
6
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Gwynedd
SER-FLEXI
1
5
0.02 %
2
40.00 %
3
60.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-NEW-IN
2
263
1.20 %
19
7.22 %
234
88.97 %
12
4.56 %
10
3.80 %
0
0.00 %
Wales
140
10032
45.61 %
747
7.45 %
8758
87.30 %
596
5.94 %
501
4.99 %
26
0.26 %
Scotland - Scotland
West lothian
PAR-NEW-IN
1
27
0.12 %
0
0.00 %
16
59.26 %
11
40.74 %
11
40.74 %
0
0.00 %
Scotland
1
27
0.12 %
0
0.00 %
16
59.26 %
11
40.74 %
11
40.74 %
0
0.00 %
Grand Total
Sum:
234
21995
1438
19330
1357
1154
73
*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 January 2024
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
88
11635
97.5%
680
5.8%
10274
88.3%
740
6.4%
635
5.5%
46
0.4%
Serial/Extended
5
301
2.5%
11
3.7%
282
93.7%
10
3.3%
7
2.3%
1
0.3%
Total
93
11936
100.0%
691
5.8%
10556
88.4%
750
6.3%
642
5.4%
47
0.4%
Scotland
Parallel
1
27
100.0%
0
0.0 %
16
59.3%
11
40.7%
11
40.7%
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
1
27
100.0%
0
0.0 %
16
59.3%
11
40.7%
11
40.7%
0
0.0 %
Wales
Parallel
136
9432
94.0%
694
7.4%
8262
87.6%
540
5.7%
450
4.8%
26
0.3%
Serial/Extended
4
600
6.0%
53
8.8%
496
82.7%
56
9.3%
51
8.5%
0
0.0 %
Total
140
10032
100.0%
747
7.4%
8758
87.3%
596
5.9%
501
5.0%
26
0.3%
GB
Parallel
225
21094
95.9%
1374
6.5%
18552
87.9%
1291
6.1%
1096
5.2%
72
0.3%
Serial/Extended
9
901
4.1%
64
7.1%
778
86.3%
66
7.3%
58
6.4%
1
0.1%
Total
234
21995
100.0%
1438
6.5%
19330
87.9%
1357
6.2%
1154
5.2%
73
0.3%
93.00
140.00
1.00
* 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
88
11635
97.5%
680
5.8%
10274
88.3%
740
6.4%
635
5.5%
46
0.4%
Serial/Extended
5
301
2.5%
11
3.7%
282
93.7%
10
3.3%
7
2.3%
1
0.3%
Total
93
11936
100.0%
691
5.8%
10556
88.4%
750
6.3%
642
5.4%
47
0.4%
Scotland
Parallel
1
27
100.0%
0
0.0 %
16
59.3%
11
40.7%
11
40.7%
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
1
27
100.0%
0
0.0 %
16
59.3%
11
40.7%
11
40.7%
0
0.0 %
Wales
Parallel
136
9432
94.0%
694
7.4%
8262
87.6%
540
5.7%
450
4.8%
26
0.3%
Serial/Extended
4
600
6.0%
53
8.8%
496
82.7%
56
9.3%
51
8.5%
0
0.0 %
Total
140
10032
100.0%
747
7.4%
8758
87.3%
596
5.9%
501
5.0%
26
0.3%
GB
Parallel
225
21094
95.9%
1374
6.5%
18552
87.9%
1291
6.1%
1096
5.2%
72
0.3%
Serial/Extended
9
901
4.1%
64
7.1%
778
86.3%
66
7.3%
58
6.4%
1
0.1%
Total
234
21995
100.0%
1438
6.5%
19330
87.9%
1357
6.2%
1154
5.2%
73
0.3%
93.00
140.00
1.00
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is possible for the laboratory
to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative result will be reported. Therefore, the total number
of samples = the sum of positive, negative, resample and reject samples only.

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Extended Flexible IFN-GAMMA test
7
653
3.0%
63
9.6%
538
82.4%
57
8.7 %
52
8.0 %
0
Parallel – chronic breakdown
4
410
1.9%
51
12.4%
336
82.0%
26
6.3 %
23
5.6 %
0
Parallel - Herd or Group Slaughter
1
9
0.0%
0
0.0 %
7
77.8%
2
22.2 %
2
22.2 %
0
Parallel - IRs in Exit Strategy for persistent her
11
56
0.3%
30
53.6%
24
42.9%
2
3.6 %
2
3.6 %
0
Parallel New Infection
32
3055
13.9%
133
4.4%
2687
88.0%
232
7.6 %
204
6.7 %
31
1.0 %
Parallel - new infection cull area
3
331
1.5%
25
7.6%
284
85.8%
25
7.6 %
22
6.6 %
0
Parallel - Other
3
82
0.4%
3
3.7%
75
91.5%
6
7.3 %
3
3.7 %
1
1.2 %
Parallel Persistent Infection
29
4709
21.4%
395
8.4%
4019
85.3%
339
7.2 %
285
6.1 %
10
0.2 %
Parallel - persistent infection cull area
4
899
4.1%
35
3.9%
811
90.2%
60
6.7 %
53
5.9 %
0
Parallel - Rapid Testing Two-times IRs
19
56
0.3%
17
30.4%
37
66.1%
2
3.6 %
2
3.6 %
0
Parallel - Recurrent breakdowns
80
11170
50.8%
540
4.8%
10112
90.5%
586
5.2 %
490
4.4 %
28
0.3 %
Parallel - severe IRs - in persistent herds
39
317
1.4%
145
45.7%
160
50.5%
11
3.5 %
10
3.2 %
2
0.6 %
Serial - Other
2
248
1.1%
1
0.4%
240
96.8%
9
3.6 %
6
2.4 %
1
0.4 %
Total
234
21995
100.0%
1438
6.5%
19330
87.9%
1357
6.2 %
1154
5.2 %
73
0.3 %
Table 4a. Summaryof IFN Gamma results by submission reason (January 2024)
England - HRA
Extended Flexible IFN-GAMMA test
3
53
0.2%
10
18.9%
42
79.2%
1
1.9 %
1
1.9 %
0
Parallel – chronic breakdown
4
410
1.9%
51
12.4%
336
82.0%
26
6.3 %
23
5.6 %
0
Parallel - new infection cull area
3
331
1.5%
25
7.6%
284
85.8%
25
7.6 %
22
6.6 %
0
Parallel Persistent Infection
4
1066
4.8%
103
9.7%
876
82.2%
108
10.1 %
86
8.1 %
1
0.1 %
Parallel - persistent infection cull area
4
899
4.1%
35
3.9%
811
90.2%
60
6.7 %
53
5.9 %
0
Parallel - Recurrent breakdowns
48
6755
30.7%
374
5.5%
6048
89.5%
366
5.4 %
314
4.6 %
19
0.3 %
England - HRA
66
9514
43.3%
598
6.3%
8397
88.3%
586
6.2 %
499
5.2 %
20
0.2 %
England - Edge
Parallel - Herd or Group Slaughter
1
9
0.0%
0
0.0 %
7
77.8%
2
22.2 %
2
22.2 %
0
Parallel New Infection
7
778
3.5%
44
5.7%
702
90.2%
37
4.8 %
28
3.6 %
4
0.5 %
Parallel - Recurrent breakdowns
7
719
3.3%
25
3.5%
646
89.8%
52
7.2 %
46
6.4 %
2
0.3 %
England - Edge
15
1506
6.8%
69
4.6%
1355
90.0%
91
6.0 %
76
5.0 %
6
0.4 %
England - LRA
Parallel New Infection
10
668
3.0%
23
3.4%
564
84.4%
64
9.6 %
61
9.1 %
20
3.0 %
Serial - Other
2
248
1.1%
1
0.4%
240
96.8%
9
3.6 %
6
2.4 %
1
0.4 %
England - LRA
12
916
4.2%
24
2.6%
804
87.8%
73
8.0 %
67
7.3 %
21
2.3 %
Wales - High TB
Extended Flexible IFN-GAMMA test
1
467
2.1%
30
6.4%
393
84.2%
48
10.3 %
44
9.4 %
0
Parallel - IRs in Exit Strategy for persistent her
10
35
0.2%
13
37.1%
20
57.1%
2
5.7 %
2
5.7 %
0
Parallel - Other
3
82
0.4%
3
3.7%
75
91.5%
6
7.3 %
3
3.7 %
1
1.2 %
Parallel Persistent Infection
17
2512
11.4%
231
9.2%
2116
84.2%
189
7.5 %
162
6.4 %
3
0.1 %
Parallel - Rapid Testing Two-times IRs
16
45
0.2%
14
31.1%
30
66.7%
1
2.2 %
1
2.2 %
0
Parallel - Recurrent breakdowns
22
3486
15.8%
126
3.6%
3241
93.0%
149
4.3 %
112
3.2 %
7
0.2 %
Parallel - severe IRs - in persistent herds
33
288
1.3%
137
47.6%
142
49.3%
8
2.8 %
7
2.4 %
2
0.7 %
Wales - High TB
102
6915
31.4%
554
8.0%
6017
87.0%
403
5.8 %
331
4.8 %
13
0.2 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
2
128
0.6%
21
16.4%
100
78.1%
8
6.3 %
7
5.5 %
0
Parallel - IRs in Exit Strategy for persistent her
1
21
0.1%
17
81.0%
4
19.0%
0
0
0
Parallel New Infection
12
1319
6.0%
47
3.6%
1171
88.8%
108
8.2 %
94
7.1 %
7
0.5 %
Parallel Persistent Infection
8
1131
5.1%
61
5.4%
1027
90.8%
42
3.7 %
37
3.3 %
6
0.5 %
Parallel - Rapid Testing Two-times IRs
3
11
0.1%
3
27.3%
7
63.6%
1
9.1 %
1
9.1 %
0
Parallel - Recurrent breakdowns
3
210
1.0%
15
7.1%
177
84.3%
19
9.0 %
18
8.6 %
0
Parallel - severe IRs - in persistent herds
6
29
0.1%
8
27.6%
18
62.1%
3
10.3 %
3
10.3 %
0
Wales - Intermediate TB
35
2849
13.0%
172
6.0%
2504
87.9%
181
6.4 %
160
5.6 %
13
0.5 %
Wales - Low TB
Extended Flexible IFN-GAMMA test
1
5
0.0%
2
40.0%
3
60.0%
0
0
0
Parallel New Infection
2
263
1.2%
19
7.2%
234
89.0%
12
4.6 %
10
3.8 %
0
Wales - Low TB
3
268
1.2%
21
7.8%
237
88.4%
12
4.5 %
10
3.7 %
0
Scotland - Scotland
Parallel New Infection
1
27
0.1%
0
0.0 %
16
59.3%
11
40.7 %
11
40.7 %
0
Scotland - Scotland
1
27
0.1%
0
0.0 %
16
59.3%
11
40.7 %
11
40.7 %
0

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Extended Flexible IFN-GAMMA test
7
653
3.0%
63
9.6%
538
82.4%
57
8.7 %
52
8.0 %
0
Parallel – chronic breakdown
4
410
1.9%
51
12.4%
336
82.0%
26
6.3 %
23
5.6 %
0
Parallel - Herd or Group Slaughter
1
9
0.0%
0
0.0 %
7
77.8%
2
22.2 %
2
22.2 %
0
Parallel - IRs in Exit Strategy for persistent herds
11
56
0.3%
30
53.6%
24
42.9%
2
3.6 %
2
3.6 %
0
Parallel New Infection
32
3055
13.9%
133
4.4%
2687
88.0%
232
7.6 %
204
6.7 %
31
1.0 %
Parallel - new infection cull area
3
331
1.5%
25
7.6%
284
85.8%
25
7.6 %
22
6.6 %
0
Parallel - Other
3
82
0.4%
3
3.7%
75
91.5%
6
7.3 %
3
3.7 %
1
1.2 %
Parallel Persistent Infection
29
4709
21.4%
395
8.4%
4019
85.3%
339
7.2 %
285
6.1 %
10
0.2 %
Parallel - persistent infection cull area
4
899
4.1%
35
3.9%
811
90.2%
60
6.7 %
53
5.9 %
0
Parallel - Rapid Testing Two-times IRs
19
56
0.3%
17
30.4%
37
66.1%
2
3.6 %
2
3.6 %
0
Parallel - Recurrent breakdowns
80
11170
50.8%
540
4.8%
10112
90.5%
586
5.2 %
490
4.4 %
28
0.3 %
Parallel - severe IRs - in persistent herds
39
317
1.4%
145
45.7%
160
50.5%
11
3.5 %
10
3.2 %
2
0.6 %
Serial - Other
2
248
1.1%
1
0.4%
240
96.8%
9
3.6 %
6
2.4 %
1
0.4 %
Total
234
21995
100.0%
1438
6.5%
19330
87.9%
1357
6.2 %
1154
5.2 %
73
0.3 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2024)
England - HRA
Extended Flexible IFN-GAMMA test
3
53
0.2%
10
18.9%
42
79.2%
1
1.9 %
1
1.9 %
0
Parallel – chronic breakdown
4
410
1.9%
51
12.4%
336
82.0%
26
6.3 %
23
5.6 %
0
Parallel - new infection cull area
3
331
1.5%
25
7.6%
284
85.8%
25
7.6 %
22
6.6 %
0
Parallel Persistent Infection
4
1066
4.8%
103
9.7%
876
82.2%
108
10.1 %
86
8.1 %
1
0.1 %
Parallel - persistent infection cull area
4
899
4.1%
35
3.9%
811
90.2%
60
6.7 %
53
5.9 %
0
Parallel - Recurrent breakdowns
48
6755
30.7%
374
5.5%
6048
89.5%
366
5.4 %
314
4.6 %
19
0.3 %
England - Edge
Parallel - Herd or Group Slaughter
1
9
0.0%
0
0.0 %
7
77.8%
2
22.2 %
2
22.2 %
0
Parallel New Infection
7
778
3.5%
44
5.7%
702
90.2%
37
4.8 %
28
3.6 %
4
0.5 %
Parallel - Recurrent breakdowns
7
719
3.3%
25
3.5%
646
89.8%
52
7.2 %
46
6.4 %
2
0.3 %
England - LRA
Parallel New Infection
10
668
3.0%
23
3.4%
564
84.4%
64
9.6 %
61
9.1 %
20
3.0 %
Serial - Other
2
248
1.1%
1
0.4%
240
96.8%
9
3.6 %
6
2.4 %
1
0.4 %
England
93
11936
54.3%
691
5.8%
10556
88.4%
750
6.3 %
642
5.4 %
47
0.4 %

Table 4b. Summary of IFN Gamma results by submission reason (Total 2024) Cont.
Wales - High TB
Extended Flexible IFN-GAMMA test
1
467
2.1%
30
6.4%
393
84.2%
48
10.3 %
44
9.4 %
0
Parallel - IRs in Exit Strategy for persistent herd
10
35
0.2%
13
37.1%
20
57.1%
2
5.7 %
2
5.7 %
0
Parallel - Other
3
82
0.4%
3
3.7%
75
91.5%
6
7.3 %
3
3.7 %
1
1.2 %
Parallel Persistent Infection
17
2512
11.4%
231
9.2%
2116
84.2%
189
7.5 %
162
6.4 %
3
0.1 %
Parallel - Rapid Testing Two-times IRs
16
45
0.2%
14
31.1%
30
66.7%
1
2.2 %
1
2.2 %
0
Parallel - Recurrent breakdowns
22
3486
15.8%
126
3.6%
3241
93.0%
149
4.3 %
112
3.2 %
7
0.2 %
Parallel - severe IRs - in persistent herds
33
288
1.3%
137
47.6%
142
49.3%
8
2.8 %
7
2.4 %
2
0.7 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
2
128
0.6%
21
16.4%
100
78.1%
8
6.3 %
7
5.5 %
0
Parallel - IRs in Exit Strategy for persistent herd
1
21
0.1%
17
81.0%
4
19.0%
0
0
0
Parallel New Infection
12
1319
6.0%
47
3.6%
1171
88.8%
108
8.2 %
94
7.1 %
7
0.5 %
Parallel Persistent Infection
8
1131
5.1%
61
5.4%
1027
90.8%
42
3.7 %
37
3.3 %
6
0.5 %
Parallel - Rapid Testing Two-times IRs
3
11
0.1%
3
27.3%
7
63.6%
1
9.1 %
1
9.1 %
0
Parallel - Recurrent breakdowns
3
210
1.0%
15
7.1%
177
84.3%
19
9.0 %
18
8.6 %
0
Parallel - severe IRs - in persistent herds
6
29
0.1%
8
27.6%
18
62.1%
3
10.3 %
3
10.3 %
0
Wales - Low TB
Extended Flexible IFN-GAMMA test
1
5
0.0%
2
40.0%
3
60.0%
0
0
0
Parallel New Infection
2
263
1.2%
19
7.2%
234
89.0%
12
4.6 %
10
3.8 %
0
Wales
140
10032
45.6%
747
7.4%
8758
87.3%
596
5.9 %
501
5.0 %
26
0.3 %
Scotland - Scotland
Parallel New Infection
1
27
0.1%
0
0.0 %
16
59.3%
11
40.7 %
11
40.7 %
0
Scotland
1
27
0.1%
0
0.0 %
16
59.3%
11
40.7 %
11
40.7 %
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
2023 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
6
0
19
0
675
0
65
0
0
September
221
18070
112
638
10
0
0
0
0
52
2
0
12
0
503
0
56
1
0
October
253
18656
139
825
1
7
0
0
0
0
50
1
0
9
1
701
2
53
0
0
November
250
22290
157
1277
6
31
0
0
0
0
142
0
11
9
6
975
27
66
0
4
December
183
14037
114
892
57
0
0
0
0
63
0
15
3
0
709
44
0
0
0
2024 January
234
21995
171
1438
273
541
0
0
0
0
7
0
0
0
0
325
23
0
0
0
Totals (last
12 months)
2733
218140
1571
10325
281
699
0
0
0
0
765
24
30
126
7
7440
97
568
3
8
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
1023
140654
686
6157
410
0
0
0
0
665
13
19
50
4
4737
1
28
1
0
Scotland
89
10881
53
376
6
0
0
0
0
69
0
0
22
0
222
1
51
1
0
Wales
1621
66605
832
3792
283
0
0
0
0
31
11
11
54
3
2481
95
489
1
8
Totals
2733
218140
1571
10325
699
0
0
0
0
765
24
30
126
7
7440
97
568
3
8
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.
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
69
114
63
171
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
January
2022
2023
2024
IFNg Positive herds
IFNg Negative herds
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
13035
892
20308
1434
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
January
2022
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
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
2022
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
20
40
60
80
100
120
Wiltshire
Staffs
Shropshire
Powys
Oxon
Northants
NE Wales
Leics & Rut
Kent
Heref
Gwent
E Sussex
Devon
Cumbria
Ceredigion
Bucks
Beds
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during January 2024 (% submission per
County)
County
%Resampled %Retested
Avon
7.54 %
8.48 %
Beds
15.15 %
15.15 %
Berks
2.36 %
3.72 %
Bucks
7.27 %
8.18 %
Carms
2.68 %
3.41 %
Ceredigion
Corn & Scilly
7.58 %
8.62 %
Cumbria
22.73 %
22.73 %
Derbyshire
6.32 %
7.19 %
Devon
5.88 %
6.52 %
Dorset
3.70 %
4.07 %
E Sussex
4.19 %
4.97 %
Gloucs
2.27 %
3.03 %
Gwent
6.71 %
7.32 %
Gwynedd
Heref
5.22 %
6.55 %
Herts
6.40 %
6.40 %
Kent
2.42 %
3.63 %
Lancashire
2.94 %
4.90 %
Leics & Rut
3.39 %
5.08 %
Lincs
4.98 %
5.43 %
NE Wales
5.48 %
6.24 %
Norfolk
27.59 %
27.59 %
Northants
50.00 %
50.00 %
Notts
5.13 %
7.69 %
Oxon
6.12 %
6.12 %
Pembs
6.11 %
7.48 %
Powys
5.85 %
6.65 %
S Glamorgan
Shropshire
4.09 %
5.14 %
Somerset excl
3.50 %
4.37 %
Staffs
5.66 %
7.11 %
West lothian
40.74 %
40.74 %
Wiltshire
3.06 %
3.77 %

Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
11798
687
5.8%
11936
691
5.8%
Wales
9918
747
7.5%
10032
747
7.4%
Scotland
27
0
0.0 %
27
0.0 %
GB
21742
1434
6.6%
21995
1438
6.5%
Table 6a (i): Number of animals and submissions tested in January 2024
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
11798
687
5.8%
11936
691
5.8%
Wales
9918
747
7.5%
10032
747
7.4%
Scotland
27
0
0.0 %
27
0.0 %
GB
21742
1434
6.6%
21995
1438
6.5%
Table 6b (i): Number of animals and submissions tested in 2024 Up to end of January
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
15094
575
3.8%
15540
575
3.7%
Wales
7031
469
6.7%
7228
469
6.5%
Scotland
905
94
10.4%
928
94
10.1%
GB
23015
1138
4.9%
23696
1138
4.8%
Table 6a (ii): Number of animals and submissions tested in January 2023
Table 6b (ii): Number of animals and submissions tested in 2023 Up to end of January
Country
No.
animals
No of IFNg+
animals
% Positive
animals
No. samples
No of IFNg+
samples
% Positive
samples
England
15094
575
3.8%
15540
575
3.7%
Wales
7031
469
6.7%
7228
469
6.5%
Scotland
905
94
10.4%
928
94
10.1%
GB
23015
1138
4.9%
23696
1138
4.8%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
East Sussex
PRV-SP
1
1
0
0
Oxfordshire
PRV-SE
1
5
0
0
Total
2
6
0
*SER-IOM: Serial High Specificity test – Isle of Man; PRV-SE: Private High Sensitivity test - England;
PRV-SP: Private High Specificity test – England
Table 7a Number of private samples January 2024
Table 7b Number of private samples 2024
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
East Sussex
PRV-SP
1
1
0
0
Oxfordshire
PRV-SE
1
5
0
0
Total
2
6
0

Country
County
Test Reason
Num
Submissions
Num Samples
Tested
Num Positive
Samples
% Positive
Wales
Carmarthenshire
BOV-IR-C
5
67
16
23.9%
Ceredigion
BOV-IR-C
1
3
0
0
BOV-IR-EX
1
21
3
14.3%
North East Wales
BOV-IR-C
1
17
6
35.3%
BOV-P
1
52
4
7.7%
North West Wales
BOV-IR-C
1
5
0
0
Pembrokeshire
BOV-IR-C
21
162
18
11.1%
BOV-IR-EX
5
18
1
5.6%
Powys
BOV-IR-C
4
38
4
10.5%
BOV-IR-EX
2
16
1
6.3%
South Wales
BOV-IR-C
1
5
0
0
Wales
43
404
53
13.1%
All GB
43
404
53
13.1 %
Table 8a Number of Cattle Antibody Tests January 2024
Table 8b Number of Cattle Antibody Tests 2024
Country
County
Test Reason
Num Submissions Num Samples Tested Num Positive Samples % Positive
Wales
Carmarthenshire
BOV-IR-C
5
67
16
23.9%
Ceredigion
BOV-IR-C
1
3
0
0
BOV-IR-EX
1
21
3
14.3%
North East Wales
BOV-IR-C
1
17
6
35.3%
BOV-P
1
52
4
7.7%
North West Wales
BOV-IR-C
1
5
0
0
Pembrokeshire
BOV-IR-C
21
162
18
11.1%
BOV-IR-EX
5
18
1
5.6%
Powys
BOV-IR-C
4
38
4
10.5%
BOV-IR-EX
2
16
1
6.3%
South Wales
BOV-IR-C
1
5
0
0
Wales
43
404
53
13.1%
All GB
43
404
53
13.1 %