Why viraemia matters: The PCV2 debate continues

Until PCV2 piglet vaccines entered the market, the detection of Porcine Circovirus 2 (PCV2) viral material by the quantitative Polymerase Chain Reaction (qPCR) method had always been subject of skepticism. This is because PCV2 can be detected both in apparently healthy and in infected animals. What does this PCV2 material actually say? By Alex A.S. Eggen, Intervet/Schering-Plough Animal Health, Boxmeer, the Netherlands © When piglet vaccines for PCV2 entered the market, first of all in Canada,