Monthly report: Surveillience Project SB4008 IFNg tests for Bovine tuberculosis - March 2020
Source: environment.data.gov.uk (2022-01-18)

Interferon-Gamma Testing for Bovine Tuberculosis - Monthly Reports from April 2016. These monthly reports summarise the gamma tests completed / reported during that calendar month. The report also summarises tests for the whole calendar year to the end of the current month.
While all effort is made to ensure the accuracy of the test data, small errors can occur and later corrected in subsequent reports. 

Cattle interferon-gamma (IFNg) tests (and test outcome) carried out between 1st Jan and 31st Dec 2009. Tests are listed by country (England, Wales, Scotland) and by Animal Health Office (AHDO) and the reason for the test. Reports contain test data for the month, the calendar year to date and total tests since rollout (23rd Oct 2006). 

Please note: this dataset consists of 12 monthly reports. Data for this report was compiled from field staff inputs and laboratory test information. Subsequent minor data amendments may have been made after the report was originally compiled, and these corrections would appear in the following month’s report. Each report was checked and deemed correct at the time of release. Attribution statement:

Monthly Report:
Surveillance Project
SB4008 IFNg tests for
bovine tuberculosis
(TC0651 and TC0751)
Number 163
Report Period 1st - 31st March 2020
Issued 16 April 2020

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.

Submission Reason
Explanation
Mandatory?
Possible Herd Slaughter
(PAR-HERD-S)
Parallel interferon-gamma 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 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 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
Rapid Testing of twice IR's
(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-CUL-N
Parallel 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 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)
Parallel Other
(PAR-OTHER)
Other parallel blood testing not covered in any
of the other scenarios
NO (APHA discretion)
'NSR' Herds (SER-NSR)
Modified serial 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 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 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)
Test Criteria

Num
samples
March 2020
%
Total 2020
%
Submissions
262
928
Samples
Total (%)
18221
100.00 %
82641
100.00 %
England
14090
77.33 %
65835
79.66 %
Wales
3363
18.46 %
14606
17.67 %
Scotland
768
4.21 %
2200
2.66 %
Parallel Tests
PAR-CUL-N
6295
34.55 %
27583
33.38 %
PAR-CUL-P
842
4.62 %
3915
4.74 %
PAR-HERD-S
53
0.29 %
279
0.34 %
PAR-NEW-IN
9083
49.85 %
36750
44.47 %
PAR-OTHER
74
0.41 %
911
1.10 %
PAR-PERSIS
1539
8.45 %
11047
13.37 %
PAR-RAPID
134
0.74 %
299
0.36 %
Total(% of all samples)
18020
98.90 %
80784
97.75 %
Serial/Extended Tests
SER-FLEXI
201
1.10 %
1857
2.25 %
SER-FRAUD
0
0.00 %
SER-NSR
0
0.00 %
Total(% of all samples)
201
1.10 %
1857
2.25 %
Total
18221
100.00 %
82641
100.00 %
Retests
Total (% of all samples)
1217
6.68 %
5243
6.34 %
England
882
4.84 %
4013
4.86 %
Wales
285
1.56 %
1101
1.33 %
Scotland
50
0.27 %
129
0.16 %
Resamples
Total (% of all samples)
961
5.27 %
4143
5.01 %
England
699
3.84 %
3145
3.81 %
Wales
217
1.19 %
886
1.07 %
Scotland
45
0.25 %
112
0.14 %
Rejects
Total (% of all samples)
271
1.49 %
1755
2.12 %
England
263
1.44 %
1668
2.02 %
Wales
8
0.04 %
22
0.03 %
Scotland
0
0.00 %
65
0.08 %
Table 1. Monthly Totals for March 2020
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN
(PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing of twice IRs, PAR-CUL-N: new infection in cull area,
PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with
concurrent Johne’s infection/vaccination, SER-NSR: serial non-specific reactor, SER-FRAUD: serial potential fraud, SER-OTHER: serial
other

PAR-CUL-N
PAR-CUL-P
PAR-HERD-S
PAR-NEW-IN
PAR-OTHER
PAR-PERSIS
PAR-RAPID
SER-FLEXI
Breakdown of
Reason for
submission
PAR-CUL-N
6295
34.5 %
PAR-CUL-P
842
4.6 %
PAR-HERD-S
53
0.3 %
PAR-NEW-IN
9083
49.8 %
PAR-OTHER
74
0.4 %
PAR-PERSIS
1539
8.4 %
PAR-RAPID
134
0.7 %
SER-FLEXI
201
1.1 %
Total
18221
100.00 %
Figure 1. Number of samples submitted in each category during March 2020
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

0
500
1000
1500
2000
2500
Dumfries & G
Berwickshire
Argyll & Bute
W Glamorgan
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
Norfolk
Lincs
Leics & Rut
Humberside
Hampshire
Gr Manchester
Gloucs
Dorset
Devon
Derbyshire
Corn & Scilly
Cheshire
Bucks
Berks
Scotland
Wales
England
SER-FLEXI
PAR-RAPID
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-HERD-S
PAR-CUL-P
PAR-CUL-N
Breakdown of
Samples
submitted by
County
Figure 2. Number of samples submitted in each category by County during March 2020
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

0
2000
4000
6000
8000
10000
12000
Wigtown
Kirkcudbright
Dumfries & G
Berwickshire
Ayrshire
Argyll & Bute
W Glamorgan
S Wales
S Glamorgan
Powys
Pembs
NE Wales
Gwynedd
Gwent
Ceredigion
Carms
Wiltshire
Warks
Surrey
Staffs
Somerset excl N
Shropshire
Oxon
N Yorks
Notts
Northants
Norfolk
Lincs
Leics & Rut
Humberside
Heref
Hampshire
Gr Manchester
Gloucs
E Sussex
Dorset
Devon
Derbyshire
Cumbria
Corn & Scilly
Cheshire
Bucks
Berks
Scotland
Wales
England
SER-FLEXI
PAR-RAPID
PAR-PERSIS
PAR-OTHER
PAR-NEW-IN
PAR-HERD-S
PAR-CUL-P
PAR-CUL-N
Breakdown
of Samples
submitted
by County
Figure 3. Number of samples submitted in each category by County during 2020
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

Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - HRA
Corn & Scilly
PAR-CUL-N
11
1,277
7.01 %
58
4.54 %
1163
91.07 %
88
6.89 %
56
4.39 %
0
0.00 %
PAR-CUL-P
2
807
4.43 %
16
1.98 %
757
93.80 %
41
5.08 %
34
4.21 %
0
0.00 %
PAR-PERSIS
1
8
0.04 %
1
12.50 %
3
37.50 %
4
50.00 %
4
50.00 %
0
0.00 %
Devon
PAR-CUL-N
17
1,832
10.05 %
103
5.62 %
1653
90.23 %
103
5.62 %
76
4.15 %
0
0.00 %
PAR-CUL-P
1
3
0.02 %
0
0.00 %
3
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
1
92
0.50 %
8
8.70 %
80
86.96 %
8
8.70 %
4
4.35 %
0
0.00 %
Dorset
PAR-CUL-N
4
314
1.72 %
15
4.78 %
278
88.54 %
25
7.96 %
21
6.69 %
0
0.00 %
PAR-NEW-IN
1
6
0.03 %
0
0.00 %
6
100.00 %
1
16.67 %
0
0.00 %
0
0.00 %
Gloucs
PAR-CUL-N
6
389
2.13 %
40
10.28 %
335
86.12 %
18
4.63 %
14
3.60 %
0
0.00 %
Shropshire
PAR-CUL-N
2
413
2.27 %
14
3.39 %
382
92.49 %
21
5.08 %
15
3.63 %
2
0.48 %
PAR-PERSIS
1
19
0.10 %
0
0.00 %
17
89.47 %
3
15.79 %
2
10.53 %
0
0.00 %
Somerset excl N
PAR-CUL-N
8
884
4.85 %
29
3.28 %
827
93.55 %
41
4.64 %
28
3.17 %
0
0.00 %
PAR-PERSIS
2
286
1.57 %
25
8.74 %
253
88.46 %
11
3.85 %
8
2.80 %
0
0.00 %
Staffs
PAR-CUL-N
5
665
3.65 %
12
1.80 %
468
70.38 %
31
4.66 %
30
4.51 %
155
23.31 %
Wiltshire
PAR-CUL-N
10
468
2.57 %
15
3.21 %
401
85.68 %
61
13.03 %
52
11.11 %
0
0.00 %
PAR-CUL-P
1
32
0.18 %
2
6.25 %
24
75.00 %
6
18.75 %
6
18.75 %
0
0.00 %
PAR-PERSIS
1
7
0.04 %
0
0.00 %
5
71.43 %
2
28.57 %
2
28.57 %
0
0.00 %
England - Edge
Berks
PAR-NEW-IN
4
769
4.22 %
9
1.17 %
706
91.81 %
62
8.06 %
54
7.02 %
0
0.00 %
Bucks
PAR-NEW-IN
2
650
3.57 %
47
7.23 %
577
88.77 %
40
6.15 %
26
4.00 %
0
0.00 %
Cheshire
PAR-CUL-N
2
51
0.28 %
1
1.96 %
42
82.35 %
10
19.61 %
8
15.69 %
0
0.00 %
PAR-NEW-IN
17
1,940
10.65 %
45
2.32 %
1799
92.73 %
109
5.62 %
96
4.95 %
0
0.00 %
Derbyshire
PAR-NEW-IN
11
968
5.31 %
21
2.17 %
871
89.98 %
87
8.99 %
76
7.85 %
0
0.00 %
Hampshire
PAR-CUL-N
1
2
0.01 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
2
100.00 %
PAR-NEW-IN
2
232
1.27 %
1
0.43 %
224
96.55 %
8
3.45 %
7
3.02 %
0
0.00 %
Leics & Rut
PAR-NEW-IN
3
388
2.13 %
14
3.61 %
360
92.78 %
23
5.93 %
13
3.35 %
1
0.26 %
Oxon
PAR-NEW-IN
6
457
2.51 %
18
3.94 %
305
66.74 %
35
7.66 %
34
7.44 %
100
21.88 %
Table 2a. Summary by County for March 2020
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
* 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 March 2020 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
Warks
PAR-NEW-IN
7
719
3.95 %
18
2.50 %
681
94.71 %
24
3.34 %
17
2.36 %
3
0.42 %
England - LRA
Gr Manchester
PAR-NEW-IN
1
29
0.16 %
0
0.00 %
27
93.10 %
2
6.90 %
2
6.90 %
0
0.00 %
Humberside
PAR-NEW-IN
2
78
0.43 %
7
8.97 %
66
84.62 %
7
8.97 %
5
6.41 %
0
0.00 %
Lincs
PAR-NEW-IN
2
118
0.65 %
2
1.69 %
114
96.61 %
2
1.69 %
2
1.69 %
0
0.00 %
Norfolk
PAR-NEW-IN
2
9
0.05 %
0
0.00 %
9
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
N Yorks
PAR-NEW-IN
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Surrey
PAR-NEW-IN
2
176
0.97 %
12
6.82 %
157
89.20 %
9
5.11 %
7
3.98 %
0
0.00 %
England
139
14090
77.33 %
533
3.78 %
12595
89.39 %
882
6.26 %
699
4.96 %
263
1.87 %
Wales - High TB
Carms
PAR-HERD-S
1
6
0.03 %
0
0.00 %
5
83.33 %
1
16.67 %
1
16.67 %
0
0.00 %
PAR-NEW-IN
1
8
0.04 %
2
25.00 %
6
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
2
17
0.09 %
5
29.41 %
11
64.71 %
1
5.88 %
1
5.88 %
0
0.00 %
PAR-PERSIS
7
38
0.21 %
10
26.32 %
25
65.79 %
5
13.16 %
2
5.26 %
1
2.63 %
PAR-RAPID
6
48
0.26 %
6
12.50 %
39
81.25 %
6
12.50 %
3
6.25 %
0
0.00 %
SER-FLEXI
1
20
0.11 %
4
20.00 %
16
80.00 %
1
5.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-OTHER
2
13
0.07 %
0
0.00 %
13
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
5
12
0.07 %
3
25.00 %
9
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-RAPID
2
13
0.07 %
6
46.15 %
6
46.15 %
1
7.69 %
1
7.69 %
0
0.00 %
Gwent
PAR-HERD-S
1
3
0.02 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
3
83
0.46 %
5
6.02 %
71
85.54 %
11
13.25 %
7
8.43 %
0
0.00 %
PAR-RAPID
4
7
0.04 %
3
42.86 %
4
57.14 %
0
0.00 %
0
0.00 %
0
0.00 %
Pembs
PAR-OTHER
6
8
0.04 %
0
0.00 %
7
87.50 %
1
12.50 %
1
12.50 %
0
0.00 %
PAR-PERSIS
19
598
3.28 %
35
5.85 %
517
86.45 %
55
9.20 %
43
7.19 %
3
0.50 %
PAR-RAPID
9
50
0.27 %
9
18.00 %
40
80.00 %
0
0.00 %
1
2.00 %
0
0.00 %
SER-FLEXI
1
2
0.01 %
0
0.00 %
2
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Powys
PAR-HERD-S
2
14
0.08 %
1
7.14 %
13
92.86 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
1
20
0.11 %
0
0.00 %
20
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
4
24
0.13 %
3
12.50 %
18
75.00 %
3
12.50 %
2
8.33 %
1
4.17 %
SER-FLEXI
2
74
0.41 %
12
16.22 %
60
81.08 %
10
13.51 %
2
2.70 %
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
* 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 March 2020 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
W Glamorgan
PAR-PERSIS
1
2
0.01 %
0
0.00 %
2
100.00 %
1
50.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
1
9
0.05 %
1
11.11 %
8
88.89 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-HERD-S
3
30
0.16 %
5
16.67 %
24
80.00 %
3
10.00 %
1
3.33 %
0
0.00 %
PAR-RAPID
1
1
0.01 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
SER-FLEXI
1
2
0.01 %
1
50.00 %
1
50.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-NEW-IN
8
1,319
7.24 %
33
2.50 %
1175
89.08 %
117
8.87 %
111
8.42 %
0
0.00 %
PAR-OTHER
1
15
0.08 %
2
13.33 %
13
86.67 %
1
6.67 %
0
0.00 %
0
0.00 %
PAR-PERSIS
4
330
1.81 %
33
10.00 %
289
87.58 %
13
3.94 %
8
2.42 %
0
0.00 %
PAR-RAPID
1
15
0.08 %
0
0.00 %
13
86.67 %
2
13.33 %
2
13.33 %
0
0.00 %
SER-FLEXI
4
94
0.52 %
3
3.19 %
82
87.23 %
11
11.70 %
7
7.45 %
2
2.13 %
Powys
PAR-NEW-IN
1
12
0.07 %
0
0.00 %
10
83.33 %
3
25.00 %
2
16.67 %
0
0.00 %
Wales - Low TB
Gwynedd
PAR-NEW-IN
4
257
1.41 %
2
0.78 %
243
94.55 %
17
6.61 %
11
4.28 %
1
0.39 %
PAR-OTHER
1
1
0.01 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
NE Wales
PAR-NEW-IN
2
178
0.98 %
3
1.69 %
173
97.19 %
11
6.18 %
2
1.12 %
0
0.00 %
PAR-PERSIS
1
40
0.22 %
0
0.00 %
32
80.00 %
10
25.00 %
8
20.00 %
0
0.00 %
Wales
113
3363
18.46 %
189
5.62 %
2949
87.69 %
285
8.47 %
217
6.45 %
8
0.24 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
5
410
2.25 %
30
7.32 %
355
86.59 %
30
7.32 %
25
6.10 %
0
0.00 %
Berwickshire
PAR-NEW-IN
2
78
0.43 %
8
10.26 %
62
79.49 %
8
10.26 %
8
10.26 %
0
0.00 %
Dumfries & G
PAR-NEW-IN
3
280
1.54 %
4
1.43 %
264
94.29 %
12
4.29 %
12
4.29 %
0
0.00 %
Scotland
10
768
4.21 %
42
5.47 %
681
88.67 %
50
6.51 %
45
5.86 %
0
0.00 %
Grand Total
Sum:
262
18221
764
16225
1217
961
271
*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
* 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
Corn & Scilly
PAR-CUL-N
28
4,174
5.05 %
133
3.19 %
3865
92.60 %
235
5.63 %
176
4.22 %
0
0.00 %
PAR-CUL-P
4
1,158
1.40 %
38
3.28 %
1071
92.49 %
58
5.01 %
49
4.23 %
0
0.00 %
PAR-PERSIS
16
3,248
3.93 %
134
4.13 %
3005
92.52 %
161
4.96 %
108
3.33 %
1
0.03 %
Devon
PAR-CUL-N
89
10,288
12.45 %
411
3.99 %
9258
89.99 %
637
6.19 %
515
5.01 %
104
1.01 %
PAR-CUL-P
7
726
0.88 %
34
4.68 %
633
87.19 %
72
9.92 %
59
8.13 %
0
0.00 %
PAR-PERSIS
1
92
0.11 %
8
8.70 %
80
86.96 %
8
8.70 %
4
4.35 %
0
0.00 %
SER-FLEXI
3
50
0.06 %
2
4.00 %
46
92.00 %
2
4.00 %
2
4.00 %
0
0.00 %
Dorset
PAR-CUL-N
18
2,272
2.75 %
152
6.69 %
1872
82.39 %
119
5.24 %
97
4.27 %
151
6.65 %
PAR-CUL-P
5
1,161
1.40 %
137
11.80 %
990
85.27 %
58
5.00 %
33
2.84 %
1
0.09 %
PAR-NEW-IN
2
167
0.20 %
5
2.99 %
156
93.41 %
11
6.59 %
6
3.59 %
0
0.00 %
SER-FLEXI
5
740
0.90 %
48
6.49 %
674
91.08 %
30
4.05 %
18
2.43 %
0
0.00 %
Gloucs
PAR-CUL-N
22
2,005
2.43 %
103
5.14 %
1765
88.03 %
167
8.33 %
137
6.83 %
0
0.00 %
Heref
PAR-CUL-N
9
877
1.06 %
33
3.76 %
812
92.59 %
43
4.90 %
29
3.31 %
3
0.34 %
PAR-NEW-IN
3
248
0.30 %
10
4.03 %
207
83.47 %
38
15.32 %
30
12.10 %
1
0.40 %
PAR-PERSIS
2
213
0.26 %
9
4.23 %
172
80.75 %
32
15.02 %
32
15.02 %
0
0.00 %
Shropshire
PAR-CUL-N
2
413
0.50 %
14
3.39 %
382
92.49 %
21
5.08 %
15
3.63 %
2
0.48 %
PAR-PERSIS
7
1,015
1.23 %
60
5.91 %
899
88.57 %
65
6.40 %
54
5.32 %
2
0.20 %
SER-FLEXI
3
389
0.47 %
16
4.11 %
352
90.49 %
27
6.94 %
21
5.40 %
0
0.00 %
Somerset excl N
PAR-CUL-N
37
3,207
3.88 %
117
3.65 %
2955
92.14 %
151
4.71 %
107
3.34 %
28
0.87 %
PAR-CUL-P
1
261
0.32 %
13
4.98 %
238
91.19 %
13
4.98 %
10
3.83 %
0
0.00 %
PAR-PERSIS
2
286
0.35 %
25
8.74 %
253
88.46 %
11
3.85 %
8
2.80 %
0
0.00 %
Staffs
PAR-CUL-N
6
968
1.17 %
37
3.82 %
729
75.31 %
51
5.27 %
47
4.86 %
155
16.01 %
Wiltshire
PAR-CUL-N
26
2,965
3.59 %
100
3.37 %
2679
90.35 %
226
7.62 %
172
5.80 %
14
0.47 %
PAR-CUL-P
4
609
0.74 %
37
6.08 %
547
89.82 %
38
6.24 %
25
4.11 %
0
0.00 %
PAR-PERSIS
2
104
0.13 %
5
4.81 %
93
89.42 %
7
6.73 %
6
5.77 %
0
0.00 %
SER-FLEXI
2
45
0.05 %
4
8.89 %
41
91.11 %
0
0.00 %
0
0.00 %
0
0.00 %
Table 2b. Summary by County for 2020
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
* 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 2020 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
England - Edge
Berks
PAR-NEW-IN
11
889
1.08 %
15
1.69 %
814
91.56 %
78
8.77 %
60
6.75 %
0
0.00 %
Bucks
PAR-NEW-IN
8
946
1.14 %
53
5.60 %
814
86.05 %
95
10.04 %
79
8.35 %
0
0.00 %
Cheshire
PAR-CUL-N
2
51
0.06 %
1
1.96 %
42
82.35 %
10
19.61 %
8
15.69 %
0
0.00 %
PAR-NEW-IN
59
9,879
11.95 %
222
2.25 %
9194
93.07 %
510
5.16 %
413
4.18 %
50
0.51 %
Derbyshire
PAR-NEW-IN
47
5,804
7.02 %
192
3.31 %
4799
82.68 %
447
7.70 %
381
6.56 %
432
7.44 %
E Sussex
PAR-NEW-IN
9
678
0.82 %
30
4.42 %
630
92.92 %
24
3.54 %
18
2.65 %
0
0.00 %
Hampshire
PAR-CUL-N
2
363
0.44 %
15
4.13 %
327
90.08 %
39
10.74 %
19
5.23 %
2
0.55 %
PAR-NEW-IN
8
855
1.03 %
21
2.46 %
787
92.05 %
52
6.08 %
47
5.50 %
0
0.00 %
Leics & Rut
PAR-NEW-IN
12
1,010
1.22 %
35
3.47 %
918
90.89 %
58
5.74 %
41
4.06 %
16
1.58 %
Northants
PAR-NEW-IN
5
298
0.36 %
8
2.68 %
272
91.28 %
22
7.38 %
18
6.04 %
0
0.00 %
Notts
PAR-NEW-IN
1
75
0.09 %
2
2.67 %
72
96.00 %
2
2.67 %
1
1.33 %
0
0.00 %
Oxon
PAR-NEW-IN
35
3,441
4.16 %
139
4.04 %
2855
82.97 %
217
6.31 %
159
4.62 %
288
8.37 %
Warks
PAR-NEW-IN
23
2,622
3.17 %
62
2.36 %
2353
89.74 %
134
5.11 %
103
3.93 %
104
3.97 %
England - LRA
Cumbria
PAR-NEW-IN
1
30
0.04 %
0
0.00 %
29
96.67 %
2
6.67 %
1
3.33 %
0
0.00 %
Gr Manchester
PAR-NEW-IN
4
266
0.32 %
1
0.38 %
52
19.55 %
3
1.13 %
3
1.13 %
210
78.95 %
Humberside
PAR-NEW-IN
2
78
0.09 %
7
8.97 %
66
84.62 %
7
8.97 %
5
6.41 %
0
0.00 %
Lincs
PAR-NEW-IN
3
176
0.21 %
7
3.98 %
162
92.05 %
7
3.98 %
7
3.98 %
0
0.00 %
Norfolk
PAR-NEW-IN
4
49
0.06 %
1
2.04 %
29
59.18 %
6
12.24 %
6
12.24 %
13
26.53 %
N Yorks
PAR-NEW-IN
3
215
0.26 %
2
0.93 %
122
56.74 %
1
0.47 %
0
0.00 %
91
42.33 %
Surrey
PAR-NEW-IN
3
429
0.52 %
17
3.96 %
396
92.31 %
18
4.20 %
16
3.73 %
0
0.00 %
England
548
65835
79.66 %
2515
3.82 %
58507
88.87 %
4013
6.10 %
3145
4.78 %
1668
2.53 %
Wales - High TB
Carms
PAR-HERD-S
4
207
0.25 %
17
8.21 %
183
88.41 %
14
6.76 %
7
3.38 %
0
0.00 %
PAR-NEW-IN
1
8
0.01 %
2
25.00 %
6
75.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-OTHER
11
211
0.26 %
28
13.27 %
168
79.62 %
16
7.58 %
15
7.11 %
0
0.00 %
PAR-PERSIS
21
1,466
1.77 %
104
7.09 %
1313
89.56 %
69
4.71 %
47
3.21 %
2
0.14 %
PAR-RAPID
19
86
0.10 %
16
18.60 %
63
73.26 %
10
11.63 %
7
8.14 %
0
0.00 %
SER-FLEXI
2
27
0.03 %
7
25.93 %
20
74.07 %
1
3.70 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-HERD-S
1
4
0.00 %
0
0.00 %
4
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-HERD-S: potential herd slaughter, PAR-P-CONF (PAR-PERSIS from 1 April 2017): persistent TB breakdown OTFW, PAR-LOW-IN (PAR-NEW-IN from 1 April 2017): parallel low incidence, PAR-RAPID: rapid testing
of twice IRs, PAR-CUL-N: new infection in cull area, PAR-CUL-P: persistent infection in cull area, PAR-OTHER: parallel other, SER-FLEXI: flexible extended test in confirmed herds with concurrent Johne’s
infection/vaccination, SER-NSR: serial non-specific reactor, SER-FRAUD: serial potential fraud, SER-OTHER: serial other
* 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 2020 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-OTHER
5
21
0.03 %
0
0.00 %
19
90.48 %
2
9.52 %
2
9.52 %
0
0.00 %
PAR-PERSIS
15
428
0.52 %
19
4.44 %
390
91.12 %
21
4.91 %
17
3.97 %
2
0.47 %
PAR-RAPID
7
31
0.04 %
11
35.48 %
19
61.29 %
1
3.23 %
1
3.23 %
0
0.00 %
Gwent
PAR-HERD-S
1
3
0.00 %
1
33.33 %
2
66.67 %
0
0.00 %
0
0.00 %
0
0.00 %
PAR-PERSIS
13
541
0.65 %
29
5.36 %
495
91.50 %
32
5.91 %
17
3.14 %
0
0.00 %
PAR-RAPID
9
17
0.02 %
5
29.41 %
12
70.59 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
3
133
0.16 %
17
12.78 %
113
84.96 %
7
5.26 %
3
2.26 %
0
0.00 %
Pembs
PAR-HERD-S
2
5
0.01 %
1
20.00 %
3
60.00 %
1
20.00 %
1
20.00 %
0
0.00 %
PAR-OTHER
24
611
0.74 %
65
10.64 %
518
84.78 %
37
6.06 %
28
4.58 %
0
0.00 %
PAR-PERSIS
47
2,409
2.92 %
158
6.56 %
2084
86.51 %
191
7.93 %
160
6.64 %
7
0.29 %
PAR-RAPID
23
108
0.13 %
23
21.30 %
83
76.85 %
1
0.93 %
2
1.85 %
0
0.00 %
SER-FLEXI
3
37
0.04 %
0
0.00 %
35
94.59 %
4
10.81 %
2
5.41 %
0
0.00 %
Powys
PAR-HERD-S
7
30
0.04 %
3
10.00 %
27
90.00 %
2
6.67 %
0
0.00 %
0
0.00 %
PAR-NEW-IN
10
1,273
1.54 %
50
3.93 %
1083
85.07 %
148
11.63 %
133
10.45 %
7
0.55 %
PAR-OTHER
4
36
0.04 %
1
2.78 %
32
88.89 %
4
11.11 %
3
8.33 %
0
0.00 %
PAR-PERSIS
20
440
0.53 %
40
9.09 %
332
75.45 %
74
xx-xxxx-xxxx %
67
15.23 %
1
0.23 %
PAR-RAPID
7
29
0.04 %
4
13.79 %
25
86.21 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
9
211
0.26 %
17
8.06 %
186
88.15 %
18
8.53 %
8
3.79 %
0
0.00 %
S Wales
PAR-PERSIS
1
69
0.08 %
3
4.35 %
64
92.75 %
6
8.70 %
2
2.90 %
0
0.00 %
SER-FLEXI
1
36
0.04 %
0
0.00 %
36
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
W Glamorgan
PAR-OTHER
1
3
0.00 %
0
0.00 %
0
0.00 %
3
100.00 %
3
100.00 %
0
0.00 %
PAR-PERSIS
2
14
0.02 %
0
0.00 %
12
85.71 %
3
21.43 %
2
14.29 %
0
0.00 %
SER-FLEXI
1
9
0.01 %
1
11.11 %
8
88.89 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Intermediate TB
Carms
PAR-HERD-S
3
30
0.04 %
5
16.67 %
24
80.00 %
3
10.00 %
1
3.33 %
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
3
198
0.24 %
23
11.62 %
167
84.34 %
8
4.04 %
8
4.04 %
0
0.00 %
PAR-RAPID
3
3
0.00 %
2
66.67 %
1
33.33 %
0
0.00 %
0
0.00 %
0
0.00 %
Ceredigion
PAR-PERSIS
2
7
0.01 %
4
57.14 %
2
28.57 %
1
14.29 %
1
14.29 %
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
* 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 2020 Cont.
Country
County
Submission
Reasons*
No.
subs
Samples
Gamma Positive
Gamma Negatives
Retest*
Resample
Reject
n
% of total
n
%
n
%
n
%
PAR-RAPID
1
1
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
0
0.00 %
SER-FLEXI
2
48
0.06 %
6
12.50 %
40
83.33 %
2
4.17 %
2
4.17 %
0
0.00 %
NE Wales
PAR-NEW-IN
24
3,183
3.85 %
75
2.36 %
2892
90.86 %
239
7.51 %
216
6.79 %
0
0.00 %
PAR-OTHER
1
15
0.02 %
2
13.33 %
13
86.67 %
1
6.67 %
0
0.00 %
0
0.00 %
PAR-PERSIS
10
477
0.58 %
61
12.79 %
401
84.07 %
20
4.19 %
15
3.14 %
0
0.00 %
PAR-RAPID
5
23
0.03 %
3
13.04 %
18
78.26 %
2
8.70 %
2
8.70 %
0
0.00 %
SER-FLEXI
5
119
0.14 %
5
4.20 %
105
88.24 %
11
9.24 %
7
5.88 %
2
1.68 %
Powys
PAR-NEW-IN
6
581
0.70 %
8
1.38 %
545
93.80 %
38
6.54 %
28
4.82 %
0
0.00 %
PAR-OTHER
1
12
0.01 %
0
0.00 %
10
83.33 %
3
25.00 %
2
16.67 %
0
0.00 %
S Glamorgan
SER-FLEXI
3
13
0.02 %
5
38.46 %
8
61.54 %
0
0.00 %
0
0.00 %
0
0.00 %
Wales - Low TB
Gwynedd
PAR-NEW-IN
7
310
0.38 %
4
1.29 %
288
92.90 %
23
7.42 %
17
5.48 %
1
0.32 %
PAR-OTHER
1
1
0.00 %
0
0.00 %
0
0.00 %
1
100.00 %
1
100.00 %
0
0.00 %
PAR-RAPID
1
1
0.00 %
0
0.00 %
1
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
NE Wales
PAR-NEW-IN
5
1,040
1.26 %
13
1.25 %
976
93.85 %
74
7.12 %
51
4.90 %
0
0.00 %
PAR-PERSIS
1
40
0.05 %
0
0.00 %
32
80.00 %
10
25.00 %
8
20.00 %
0
0.00 %
Wales
359
14606
17.67 %
839
5.74 %
12859
88.04 %
1101
7.54 %
886
6.07 %
22
0.15 %
Scotland - Scotland
Argyll & Bute
PAR-NEW-IN
6
572
0.69 %
31
5.42 %
446
77.97 %
35
6.12 %
30
5.24 %
65
11.36 %
Ayrshire
PAR-NEW-IN
3
383
0.46 %
1
0.26 %
359
93.73 %
30
7.83 %
23
6.01 %
0
0.00 %
Berwickshire
PAR-NEW-IN
2
78
0.09 %
8
10.26 %
62
79.49 %
8
10.26 %
8
10.26 %
0
0.00 %
Dumfries & G
PAR-NEW-IN
6
849
1.03 %
12
1.41 %
802
94.46 %
38
4.48 %
35
4.12 %
0
0.00 %
Kirkcudbright
PAR-NEW-IN
1
21
0.03 %
0
0.00 %
21
100.00 %
0
0.00 %
0
0.00 %
0
0.00 %
Wigtown
PAR-NEW-IN
3
297
0.36 %
14
4.71 %
267
89.90 %
18
6.06 %
16
5.39 %
0
0.00 %
Scotland
21
2200
2.66 %
66
3.00 %
1957
88.95 %
129
5.86 %
112
5.09 %
65
2.95 %
Grand Total
Sum:
928
82641
3420
73323
5243
4143
1755
*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
* 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 March 2020
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
139
14090
100.0%
533
3.8%
12595
89.4%
882
6.3%
699
5.0%
263
1.9%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
139
14090
100.0%
533
3.8%
12595
89.4%
882
6.3%
699
5.0%
263
1.9%
Scotland
Parallel
10
768
100.0%
42
5.5%
681
88.7%
50
6.5%
45
5.9%
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
10
768
100.0%
42
5.5%
681
88.7%
50
6.5%
45
5.9%
0
0.0 %
Wales
Parallel
103
3162
94.0%
168
5.3%
2780
87.9%
263
8.3%
208
6.6%
6
0.2%
Serial/Extended
10
201
6.0%
21
10.4%
169
84.1%
22
10.9%
9
4.5%
2
1.0%
Total
113
3363
100.0%
189
5.6%
2949
87.7%
285
8.5%
217
6.5%
8
0.2%
GB
Parallel
252
18020
98.9%
743
4.1%
16056
89.1%
1195
6.6%
952
5.3%
269
1.5%
Serial/Extended
10
201
1.1%
21
10.4%
169
84.1%
22
10.9%
9
4.5%
2
1.0%
Total
262
18221
100.0%
764
4.2%
16225
89.0%
1217
6.7%
961
5.3%
271
1.5%
139.00
113.00
10.00
* 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 2020)
Country
Protocol
No
submissions Samples
Positive
Negatives
Retest*
Resample
Reject
n
% of total n
%
n
%
n
%
n
%
n
%
England
Parallel
535
64611
98.1%
2445
3.8%
57394
88.8%
3954
6.1%
3104
4.8%
1668
2.6%
Serial/Extended
13
1224
1.9%
70
5.7%
1113
90.9%
59
4.8%
41
3.3%
0
0.0 %
Total
548
65835
100.0%
2515
3.8%
58507
88.9%
4013
6.1%
3145
4.8%
1668
2.5%
Scotland
Parallel
21
2200
100.0%
66
3.0%
1957
89.0%
129
5.9%
112
5.1%
65
3.0%
Serial/Extended
0
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
0
0.0 %
Total
21
2200
100.0%
66
3.0%
1957
89.0%
129
5.9%
112
5.1%
65
3.0%
Wales
Parallel
330
13973
95.7%
781
5.6%
12308
88.1%
1058
7.6%
864
6.2%
20
0.1%
Serial/Extended
29
633
4.3%
58
9.2%
551
87.0%
43
6.8%
22
3.5%
2
0.3%
Total
359
14606
100.0%
839
5.7%
12859
88.0%
1101
7.5%
886
6.1%
22
0.2%
GB
Parallel
886
80784
97.8%
3292
4.1%
71659
88.7%
5141
6.4%
4080
5.1%
1753
2.2%
Serial/Extended
42
1857
2.2%
128
6.9%
1664
89.6%
102
5.5%
63
3.4%
2
0.1%
Total
928
82641
100.0%
3420
4.1%
73323
88.7%
5243
6.3%
4143
5.0%
1755
2.1%
548.00
359.00
21.00
* Sufficient plasma supernatant is collected and stored following the overnight culture stage of the assay such that if the sample fails any of the QC criteria, it is possible for the laboratory
to ‘re-test’ the original sample. Depending on the outcome of a retest, a resample (if QC criteria fail to be met), a positive or a negative result will be reported. Therefore, the total number
of samples = the sum of positive, negative, resample and reject samples only.

Submission Reason
No
submissions Samples
Gamma Positive
Gamma Negatives
Retest
Resample
Reject
n
% of total
n
%
n
%
n
%
n
%
n
%
GB
Extended Flexible IFN-GAMMA test
10
201
1.1%
21
10.4%
169
84.1%
22
10.9 %
9
4.5 %
2
1.0 %
Parallel - Herd or Group Slaughter
7
53
0.3%
7
13.2%
44
83.0%
4
7.5 %
2
3.8 %
0
Parallel New Infection
89
9083
49.8%
276
3.0%
8192
90.2%
607
6.7 %
510
5.6 %
105
1.2 %
Parallel - new infection cull area
66
6295
34.5%
287
4.6%
5549
88.1%
398
6.3 %
300
4.8 %
159
2.5 %
Parallel - Other
13
74
0.4%
7
9.5%
64
86.5%
4
5.4 %
3
4.1 %
0
Parallel Persistent Infection
50
1539
8.4%
123
8.0%
1321
85.8%
126
8.2 %
90
5.8 %
5
0.3 %
Parallel - persistent infection cull area
4
842
4.6%
18
2.1%
784
93.1%
47
5.6 %
40
4.8 %
0
Parallel - Rapid Testing Two-times IRs
23
134
0.7%
25
18.7%
102
76.1%
9
6.7 %
7
5.2 %
0
Total
262
18221
100.0%
764
4.2%
16225
89.0%
1217
6.7 %
961
5.3 %
271
1.5 %
Table 4a. Summaryof IFN Gamma results by submission reason (March 2020)
England - HRA
Parallel New Infection
1
6
0.0%
0
0.0 %
6
100.0%
1
16.7 %
0
0
Parallel - new infection cull area
63
6242
34.3%
286
4.6%
5507
88.2%
388
6.2 %
292
4.7 %
157
2.5 %
Parallel Persistent Infection
6
412
2.3%
34
8.3%
358
86.9%
28
6.8 %
20
4.9 %
0
Parallel - persistent infection cull area
4
842
4.6%
18
2.1%
784
93.1%
47
5.6 %
40
4.8 %
0
England - HRA
74
7502
41.2%
338
4.5%
6655
88.7%
464
6.2 %
352
4.7 %
157
2.1 %
England - Edge
Parallel New Infection
52
6123
33.6%
173
2.8%
5523
90.2%
388
6.3 %
323
5.3 %
104
1.7 %
Parallel - new infection cull area
3
53
0.3%
1
1.9%
42
79.2%
10
18.9 %
8
15.1 %
2
3.8 %
England - Edge
55
6176
33.9%
174
2.8%
5565
90.1%
398
6.4 %
331
5.4 %
106
1.7 %
England - LRA
Parallel New Infection
10
412
2.3%
21
5.1%
375
91.0%
20
4.9 %
16
3.9 %
0
England - LRA
10
412
2.3%
21
5.1%
375
91.0%
20
4.9 %
16
3.9 %
0
Wales - High TB
Extended Flexible IFN-GAMMA test
5
105
0.6%
17
16.2%
86
81.9%
11
10.5 %
2
1.9 %
0
Parallel - Herd or Group Slaughter
4
23
0.1%
2
8.7%
20
87.0%
1
4.3 %
1
4.3 %
0
Parallel New Infection
1
8
0.0%
2
25.0%
6
75.0%
0
0
0
Parallel - Other
11
58
0.3%
5
8.6%
51
87.9%
2
3.4 %
2
3.4 %
0
Parallel Persistent Infection
39
757
4.2%
56
7.4%
642
84.8%
75
9.9 %
54
7.1 %
5
0.7 %
Parallel - Rapid Testing Two-times IRs
21
118
0.6%
24
20.3%
89
75.4%
7
5.9 %
5
4.2 %
0
Wales - High TB
81
1069
5.9%
106
9.9%
894
83.6%
96
9.0 %
64
6.0 %
5
0.5 %
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
5
96
0.5%
4
4.2%
83
86.5%
11
11.5 %
7
7.3 %
2
2.1 %
Parallel - Herd or Group Slaughter
3
30
0.2%
5
16.7%
24
80.0%
3
10.0 %
1
3.3 %
0
Parallel New Infection
9
1331
7.3%
33
2.5%
1185
89.0%
120
9.0 %
113
8.5 %
0
Parallel - Other
1
15
0.1%
2
13.3%
13
86.7%
1
6.7 %
0
0
Parallel Persistent Infection
4
330
1.8%
33
10.0%
289
87.6%
13
3.9 %
8
2.4 %
0
Parallel - Rapid Testing Two-times IRs
2
16
0.1%
1
6.3%
13
81.3%
2
12.5 %
2
12.5 %
0
Wales - Intermediate TB
24
1818
10.0%
78
4.3%
1607
88.4%
150
8.3 %
131
7.2 %
2
0.1 %
Wales - Low TB
Parallel New Infection
6
435
2.4%
5
1.1%
416
95.6%
28
6.4 %
13
3.0 %
1
0.2 %
Parallel - Other
1
1
0.0%
0
0.0 %
0
0.0 %
1
100.0 %
1
100.0 %
0
Parallel Persistent Infection
1
40
0.2%
0
0.0 %
32
80.0%
10
25.0 %
8
20.0 %
0
Wales - Low TB
8
476
2.6%
5
1.1%
448
94.1%
39
8.2 %
22
4.6 %
1
0.2 %
Scotland - Scotland
Parallel New Infection
10
768
4.2%
42
5.5%
681
88.7%
50
6.5 %
45
5.9 %
0
Scotland - Scotland
10
768
4.2%
42
5.5%
681
88.7%
50
6.5 %
45
5.9 %
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
42
1857
2.2%
128
6.9%
1664
89.6%
102
5.5 %
63
3.4 %
2
0.1 %
Parallel - Herd or Group Slaughter
18
279
0.3%
27
9.7%
243
87.1%
20
7.2 %
9
3.2 %
0
Parallel New Infection
317
36750
44.5%
1047
2.8%
32474
88.4%
2383
6.5 %
1951
5.3 %
1278
3.5 %
Parallel - new infection cull area
241
27583
33.4%
1116
4.0%
24686
89.5%
xx-xxxx-xxxx
6.2 %
1322
4.8 %
459
1.7 %
Parallel - Other
49
911
1.1%
96
10.5%
761
83.5%
67
7.4 %
54
5.9 %
0
Parallel Persistent Infection
165
11047
13.4%
682
6.2%
9794
88.7%
719
6.5 %
556
5.0 %
15
0.1 %
Parallel - persistent infection cull area
21
3915
4.7%
259
6.6%
3479
88.9%
239
6.1 %
176
4.5 %
1
0.0 %
Parallel - Rapid Testing Two-times IRs
75
299
0.4%
65
21.7%
222
74.2%
14
4.7 %
12
4.0 %
0
Total
928
82641
100.0%
3420
4.1%
73323
88.7%
5243
6.3 %
4143
5.0 %
1755
2.1 %
Table 4b. Summary of IFN Gamma results by submission reason (Total 2020)
England - HRA
Extended Flexible IFN-GAMMA test
13
1224
1.5%
70
5.7%
1113
90.9%
59
4.8 %
41
3.3 %
0
Parallel New Infection
5
415
0.5%
15
3.6%
363
87.5%
49
11.8 %
36
8.7 %
1
0.2 %
Parallel - new infection cull area
237
27169
32.9%
1100
4.0%
24317
89.5%
1650
6.1 %
1295
4.8 %
457
1.7 %
Parallel Persistent Infection
30
4958
6.0%
241
4.9%
4502
90.8%
284
5.7 %
212
4.3 %
3
0.1 %
Parallel - persistent infection cull area
21
3915
4.7%
259
6.6%
3479
88.9%
239
6.1 %
176
4.5 %
1
0.0 %
England - Edge
Parallel New Infection
218
26497
32.1%
779
2.9%
23508
88.7%
1639
6.2 %
1320
5.0 %
890
3.4 %
Parallel - new infection cull area
4
414
0.5%
16
3.9%
369
89.1%
49
11.8 %
27
6.5 %
2
0.5 %
England - LRA
Parallel New Infection
20
1243
1.5%
35
2.8%
856
68.9%
44
3.5 %
38
3.1 %
314
25.3 %
England
548
65835
79.7%
2515
3.8%
58507
88.9%
4013
6.1 %
3145
4.8 %
1668
2.5 %
Wales - High TB
Extended Flexible IFN-GAMMA test
19
453
0.5%
42
9.3%
398
87.9%
30
6.6 %
13
2.9 %
0
Parallel - Herd or Group Slaughter
15
249
0.3%
22
8.8%
219
88.0%
17
6.8 %
8
3.2 %
0
Parallel New Infection
11
1281
1.6%
52
4.1%
1089
85.0%
148
11.6 %
133
10.4 %
7
0.5 %
Parallel - Other
45
882
1.1%
94
10.7%
737
83.6%
62
7.0 %
51
5.8 %
0
Parallel Persistent Infection
119
5367
6.5%
353
6.6%
4690
87.4%
396
7.4 %
312
5.8 %
12
0.2 %
Parallel - Rapid Testing Two-times IRs
65
271
0.3%
59
21.8%
202
74.5%
12
4.4 %
10
3.7 %
0
Wales - Intermediate TB
Extended Flexible IFN-GAMMA test
10
180
0.2%
16
8.9%
153
85.0%
13
7.2 %
9
5.0 %
2
1.1 %
Parallel - Herd or Group Slaughter
3
30
0.0%
5
16.7%
24
80.0%
3
10.0 %
1
3.3 %
0

Table 4b. Summaryof IFN Gamma results by submission reason (Total 2020) Cont.
Parallel New Infection
30
3764
4.6%
83
2.2%
3437
91.3%
277
7.4 %
244
6.5 %
0
Parallel - Other
3
28
0.0%
2
7.1%
24
85.7%
4
14.3 %
2
7.1 %
0
Parallel Persistent Infection
15
682
0.8%
88
12.9%
570
83.6%
29
4.3 %
24
3.5 %
0
Parallel - Rapid Testing Two-times IRs
9
27
0.0%
6
22.2%
19
70.4%
2
7.4 %
2
7.4 %
0
Wales - Low TB
Parallel New Infection
12
1350
1.6%
17
1.3%
1264
93.6%
97
7.2 %
68
5.0 %
1
0.1 %
Parallel - Other
1
1
0.0%
0
0.0 %
0
0.0 %
1
100.0 %
1
100.0 %
0
Parallel Persistent Infection
1
40
0.0%
0
0.0 %
32
80.0%
10
25.0 %
8
20.0 %
0
Parallel - Rapid Testing Two-times IRs
1
1
0.0%
0
0.0 %
1
100.0%
0
0
0
Wales
359
14606
17.7%
839
5.7%
12859
88.0%
1101
7.5 %
886
6.1 %
22
0.2 %
Scotland - Scotland
Parallel New Infection
21
2200
2.7%
66
3.0%
1957
89.0%
129
5.9 %
112
5.1 %
65
3.0 %
Scotland
21
2200
2.7%
66
3.0%
1957
89.0%
129
5.9 %
112
5.1 %
65
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
2019 April
269
30320
162
1135
1
8
0
0
0
0
87
3
0
5
0
989
0
40
0
0
May
364
28357
176
1116
2
0
0
0
0
99
0
0
5
0
962
6
42
0
0
June
287
26287
159
964
5
13
0
0
0
0
94
1
0
4
0
773
0
73
0
0
July
316
32549
201
1219
1
13
0
0
0
0
108
3
0
12
0
1020
0
58
0
2
August
262
21887
126
724
1
8
0
0
0
0
84
1
0
6
0
570
0
52
0
0
September
245
25317
134
693
1
7
0
0
0
0
94
1
0
3
0
542
0
45
0
0
October
298
26690
154
743
0
0
0
0
0
58
1
0
5
0
604
0
71
0
3
November
272
30186
169
1080
14
0
0
0
0
72
5
0
15
0
910
0
61
0
1
December
234
25192
138
904
2
0
0
0
0
0
87
1
1
4
0
759
0
49
0
1
2020 January
343
31274
227
1367
1
7
0
0
0
0
178
0
0
8
3
1110
9
49
0
0
February
323
33146
192
1289
7
18
0
0
0
0
187
0
8
1
0
979
88
1
0
0
March
262
18221
147
764
14
330
0
0
0
0
49
0
5
0
0
331
30
0
0
0
Totals (last
12 months)
3475
329426
1985
11998
33
420
0
0
0
0
1197
16
14
68
3
9549
133
541
0
7
Table 5a. Summary of PM and culture results for IFNg positive animals.

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
2071
261990
1270
8940
316
0
0
0
0
1069
8
6
42
2
7385
7
62
0
1
Scotland
40
4527
21
152
32
0
0
0
0
13
0
0
3
0
94
8
1
0
0
Wales
1364
62909
694
2906
72
0
0
0
0
115
8
8
23
1
2070
118
478
0
6
Totals
3475
329426
1985
11998
420
0
0
0
0
1197
16
14
68
3
9549
133
541
0
7
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.
67
140
76
130
58
131
77
118
119
131
77
110
88
119
108
120
79
137
122
152
90
192
81
147
110
179
104
216
116
199
107
162
188
176
128
159
115
201
136
126
111
134
144
154
103
169
96
138
116
227
131
192
115
147
0
50
100
150
200
250
300
350
400
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
2018
2019
2020
IFNg Positive herds
IFNg Negative herds
18401
969
19186
1229
15561
1199
18776
953
19795
947
17980
701
22955
806
18566
682
20202
946
22357
1416
22496
1580
20038
1241
25652
1283
25636
1907
27595
1546
28851
1135
26967
1116
25138
964
30958
1219
20704
724
24198
693
25193
743
28627
1080
23356
904
29262
1367
31244
1289
17118
764
0
5000
10000
15000
20000
25000
30000
35000
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
April
May
June
July
August
September
October
November
December
January
February
March
2018
2019
2020
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
February
March
2018
2019
2020
%Rejected
%Resampled
% NEG Fail
% POS Fail
% of total
submitted
Figure 5. Rates of resamples including the fail rates broken down for positive
(POS) and negative (NEG) controls.

0
5
10
15
20
25
30
Wiltshire
Warks
Staffs
Shropshire
Pembs
N Yorks
NE Wales
Leics & Rut
Hampshire
Gwent
Gloucs
Dorset
Derbyshire
Cheshire
Carms
Berwickshire
Argyll & Bute
%Retested
%Resampled
Figure 6. Proportion of samples retested, or requiring a resample, during March 2020 (% submission per
County)
County
%Resampled %Retested
Argyll & Bute
6.10 %
7.32 %
Berks
7.02 %
8.06 %
Berwickshire
10.26 %
10.26 %
Bucks
4.00 %
6.15 %
Carms
4.76 %
10.12 %
Ceredigion
2.50 %
2.50 %
Cheshire
5.22 %
5.98 %
Corn & Scilly
4.49 %
6.36 %
Derbyshire
7.85 %
8.99 %
Devon
4.15 %
5.76 %
Dorset
6.56 %
8.13 %
Dumfries & G
4.29 %
4.29 %
Gloucs
3.60 %
4.63 %
Gr Manchester
6.90 %
6.90 %
Gwent
7.53 %
11.83 %
Gwynedd
4.65 %
6.98 %
Hampshire
2.99 %
3.42 %
Humberside
6.41 %
8.97 %
Leics & Rut
3.35 %
5.93 %
Lincs
1.69 %
1.69 %
NE Wales
6.93 %
8.29 %
Norfolk
N Yorks
Oxon
7.44 %
7.66 %
Pembs
6.84 %
8.51 %
Powys
4.17 %
11.11 %
Shropshire
3.94 %
5.56 %
Somerset excl
3.08 %
4.44 %
Staffs
4.51 %
4.66 %
Surrey
3.98 %
5.11 %
Warks
2.36 %
3.34 %
W Glamorgan
9.09 %
Wiltshire
11.83 %
13.61 %

Country
No.
animals
No of IFHg+
animals
% Positive
animals
No. samples
No of IFHg+
samples
% Positive
samples
England
13849
533
3.8%
14090
533
3.8%
Wales
3282
189
5.8%
3363
189
5.6%
Scotland
751
42
5.6%
768
42
5.5%
GB
17882
764
4.3%
18221
764
4.2%
Table 6a (i): Number of animals and submissions tested in March 2020
Country
No.
animals
No of IFHg+
animals
% Positive
animals
No. samples
No of IFHg+
samples
% Positive
samples
England
62705
2515
4.0%
65835
2515
3.8%
Wales
13942
838
6.0%
14606
839
5.7%
Scotland
2072
66
3.2%
2200
66
3.0%
GB
78719
3419
4.3%
82641
3420
4.1%
Table 6b (i): Number of animals and submissions tested in 2020 Up to end of March
Country
No.
animals
No of IFHg+
animals
% Positive
animals
No. samples
No of IFHg+
samples
% Positive
samples
England
23913
1241
5.2%
24319
1241
5.1%
Wales
4862
301
6.2%
4939
301
6.1%
Scotland
366
4
1.1%
366
4
1.1%
GB
29141
1546
5.3%
29624
1546
5.2%
Table 6a (ii): Number of animals and submissions tested in March 2019
Table 6b (ii): Number of animals and submissions tested in 2019 Up to end of March
Country
No.
animals
No of IFHg+
animals
% Positive
animals
No. samples
No of IFHg+
samples
% Positive
samples
England
64280
3601
5.6%
67619
3601
5.3%
Wales
16382
1131
6.9%
17196
1131
6.6%
Scotland
366
4
1.1%
366
4
1.1%
GB
81028
4736
5.8%
85181
4736
5.6%

* Test type
Num
Submissions
Num Samples Num Positives
Private
% Positive
Total
0
0
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 March 2020
Table 7b Number of private samples 2020
* Test type
Num
Submissions
Num
Samples
Num
Positives
Private
% Positive
Cheshire
PRV-SP
1
1
0
0
Devon
PRV-SE
1
119
0
0
PRV-SP
1
6
0
0
Dorset
PRV-SE
1
1
0
0
PRV-SP
1
3
0
0
Gloucestershire
PRV-SE
1
8
3
37.50 %
Oxfordshire
PRV-SP
1
32
0
0
Staffordshire
PRV-SE
1
24
0
0
Worcestershire
PRV-SP
1
1
0
0
Total
9
195
3
1.54 %
Isle of Man
SER-IOM
8
46
0
0

Test
County
Num Submissions
Num Samples Tested
Num Positive Samples % Positive
TC0077
Carmarthenshire
2
33
6
18.2%
Ceredigion
3
5
1
20.0%
North East Wales
6
370
36
9.7%
Pembrokeshire
7
120
23
19.2%
Powys
2
83
11
13.3%
South Wales
4
97
26
26.8%
TC0077
24
708
103
14.5 %
Table 8a Number of Cattle Antibody Tests March 2020
Test
County
Num Submissions
Num Samples Tested
Num Positive Samples % Positive
TC0077
Carmarthenshire
8
216
32
14.8%
Ceredigion
4
7
1
14.3%
Devon
4
1,032
95
9.2%
North East Wales
12
505
54
10.7%
Pembrokeshire
16
357
56
15.7%
Powys
2
83
11
13.3%
South Wales
8
142
30
21.1%
TC0077
54
2,342
279
11.9 %
Table 8b Number of Cattle Antibody Tests 2020