10  SICTT test-types


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10.1 All test-types (herd and animal-level SICTTs)

Figure 10.1: The proportion of all SICTTs by all test-types.

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10.1.1 Herd vs animal level test-types

Many SICTT are just animal-level tests and are not associated with a full herd test (e.g., a pre-movement test). We assigned each test-type to a herd or animal level test:

Table 10.1: SICTT by herd or animal-level test.

Herd

Animal

1; Round test

3; Inconclusive reactor re-test

2; New Herd Special Check Test (S.C.T.)

5D; Factory return (Animal/herd) obsolete

4; Reactor re-test

5G; Forward trace S.C.T. (animal)

5A; Classification related S.C.T.

5H; Miscellaneous (animal) S.C.T.

5B; Associated to a reactor herd S.C.T.

6; Private test

5C; High incidence Area/DED and Miscellaneous C.T. (herd)

5E; OTF regain status S.C.T.

5F; Backward trace S.C.T. (herd)

7A; Post depopulation C.T.

7B; Post de-restriction C.T.

8; Contiguous herd test

9A; Factory lesion test

10A; Balance of herd test (factory lesion)

10B; Balance of herd test (private test)

10C; Balance of herd test (inc retest)

10D; Balance of herd test (fwd trace S.C.T.)

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Figure 10.2: The proportion of all SICTTs by whether it was an animal or herd-level SICTT.

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repeat above plots by herd-level only SICTTs (increase in animal level tests skewing true )

10.1.2 All test-types (herd-level SICTT only)

Figure 10.3: The proportion of all SICTTs by all test-types.

And table format:

Table 10.2: Proportion of herd-level SICTTs by all herd-level test-types (presented as %)

Test type

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

10A; Balance of herd test (factory lesion)

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.0

0.0

10B; Balance of herd test (private test)

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

10C; Balance of herd test (inc retest)

0.1

0.1

0.1

0.1

0.0

0.0

0.0

0.1

0.1

0.0

0.0

0.1

0.0

0.0

0.0

0.0

0.0

0.0

10D; Balance of herd test (fwd trace S.C.T.)

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

1; Round test

64.6

67.7

70.8

72.9

73.1

75.3

75.4

76.3

77.2

76.5

74.8

73.6

71.3

69.6

71.9

70.3

67.6

65.7

2; New Herd Special Check Test (S.C.T.)

0.9

1.1

1.0

1.3

1.6

1.4

1.2

2.0

1.5

1.3

1.1

0.9

1.2

1.5

1.0

1.0

0.8

0.7

4; Reactor re-test

10.2

9.1

8.2

7.4

7.2

6.7

6.6

5.9

5.7

5.8

6.0

6.2

7.2

7.3

7.3

8.0

9.5

10.9

5A; Classification related S.C.T.

3.2

3.3

3.7

3.5

3.1

2.9

2.7

2.7

2.4

2.2

1.9

2.2

2.0

2.3

2.7

2.4

2.6

2.4

5B; Associated to a reactor herd S.C.T.

0.1

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.1

5C; High incidence Area/DED and Miscellaneous C.T. (herd)

3.6

3.0

1.8

1.2

1.0

0.8

0.9

1.1

1.3

0.9

1.6

3.4

3.0

4.3

3.0

3.1

3.3

3.3

5E; OTF regain status S.C.T.

0.3

0.3

0.3

0.3

0.3

0.4

0.4

0.3

0.3

0.3

0.3

0.3

0.4

0.4

0.5

0.6

0.8

0.7

5F; Backward trace S.C.T. (herd)

0.2

0.8

0.9

0.9

0.8

0.8

0.7

0.7

0.6

0.7

0.7

0.6

0.8

0.9

1.0

1.2

1.3

1.4

7A; Post depopulation C.T.

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

7B; Post de-restriction C.T.

4.3

4.3

3.7

3.5

3.1

3.1

2.9

2.8

2.6

2.0

2.1

2.2

2.3

2.7

2.7

2.5

2.8

3.5

8; Contiguous herd test

10.9

8.9

8.1

7.8

8.5

7.4

8.0

7.1

7.4

9.1

10.3

9.5

10.6

9.9

8.7

9.5

10.0

10.1

9A; Factory lesion test

1.5

1.3

1.3

1.1

1.0

1.0

0.9

0.8

0.8

0.8

0.9

0.8

1.0

1.0

1.1

1.2

1.2

1.2

10.2 Timing of round test-type

Seasonality of annual round test (test_type = 1)

Is there more annual round test during certain months of the year (e.g., summer/autumn) which might reflect more cases being detected?

Simple count and proportion is plotted below.

10.2.1 All herds count

Figure 10.4: The count of all round tests by month

10.2.2 Count by herd-type

Figure 10.5: The count of all round tests by month
Figure 10.6: The count of all round tests by month

10.2.3 All herds proportion

Figure 10.7: The proportion of all round tests by month

10.2.4 by herd-type

Figure 10.8: The proportion of all round tests by month and herd-type

10.3 APT (Animals Reactor per Thousand Animal Tests)

SICTT positive animals per thousand tested

APT is used by DAFM as an administrative metric (which just looks at SICTT)

Figure 10.9: APT

10.3.1 APT by herd

Figure 10.10: APT by herd-type