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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