Prevalence of porcine circovirus type 3 in pigs in the southeastern Chinese province of Zhejiang.

Results from this study provided further evidence that the novel virus PCV3 was widely distributed in China and might have emerged in Zhejiang province before 2014, most probably back in 2012 when there was high PCV3 sero-prevalence. PCV3 might be viremic in pigs and could spread by fecal shedding.