Skip to main content

Table 5 Apparent and true (estimated) animal prevalence of Mycobacterium avium subspecies paratuberculosis infection stratified by age

From: Prevalence and distribution of paratuberculosis (Johne's disease) in cattle herds in Ireland

Age

Apparent seroprevalence % (95% CI)

True prevalence1% (95% CI)

Total number of animals

<2

0.59 (0.40, 0.86)

1.41 (1.24, 1.58)

4764

2

0.64 (0.39, 1.02)

1.59 (1.36, 1.82)

2833

3

0.56 (0.30, 1.00)

1.30 (1.06, 1.55)

2151

4

1.04 (0.64, 1.66)

3.04 (2.68, 3.41)

1819

5+

1.42 (1.18, 1.69)

4.42 (4.23, 4.62)

8755

>= 2

1.11 (0.95, 1.29)

3.30 (3.17, 3.43)

15,558

Total

0.99 (0.86, 1.14)

2.86 (2.76, 2.97)

20,322

  1. 1 Based on a test sensitivity of 27.8% and specificity of 99.8%.