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Table 3 Seroprevalence of chlamydial infection in dairy cattle of different ages in Guangzhou, southern China examined by indirect hemagglutination assay (IHA)

From: Seroprevalence of chlamydial infection in dairy cattle in Guangzhou, southern China

Age (year)

No. examined

No. positive

Prevalence (%)

1 ≤ yr < 2

44

2

4.55

2 ≤ yr < 3

51

1

1.96

3 ≤ yr < 4

54

4

7.41

4 ≤ yr < 5

25

1

4.0

5 ≤ yr < 6

91

8

8.79

6 ≤ yr < 7

49

5

10.20

7 ≤ yr < 8

57

5

8.77

≥ 8

29

3

10.34

Total

400

29

7.25