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Sero-prevalence of PCV3 infection in pig serum samples from 2011 to 2017 as determined by indirect ELISA
| Year | No. of samples | No. of positive samples | Positive rate (%) |
|---|---|---|---|
| 2011 | 28 | 0 | 0 |
| 2012 | 880 | 535 | 60.8 |
| 2013 | 46 | 27 | 58.7 |
| 2016 | 663 | 310 | 46.8 |
| 2017 | 728 | 362 | 49.7 |
| Total | 2345 | 1234 | 52.6 |
