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Table 2 Seroprevalence of antibodies against PRRSV in pigs in Jiangxi Province, China in 2007.

From: Outbreaks of highly pathogenic porcine reproductive and respiratory syndrome in Jiangxi province, China

Herds

No. of positive sera

No. of sera examined

1

10

10

2

10

10

3

14

16

4

17

24

5

62

92

Total

113

152