Single Dose Vaccine Against PCV2 in Sows Induces Transfer of Colostral ... ThePigSite.com SPAIN - A recent CReSA study has investigated the presence of porcine circovirus type 2 (PCV2) DNA and antibodies to the virus in serum and colostrum of sows vaccinated before insemination and in piglets. The study revealed that immunization of sows ... |