| the emergence of porcine circovirus 2b genotype (pcv-2b) in swine in canada. | since late 2004, the swine industry in the province of quebec has experienced a significant increase in death rate related to postweaning multisystemic wasting syndrome (pmws). to explain this phenomenon, 2 hypotheses were formulated: 1) the presence of a 2nd pathogen could be exacerbating the porcine circovirus 2 (pcv-2) infection, or 2) a new and more virulent pcv-2 strain could be infecting swine. in 2005, 13 pmws cases were submitted to the quebec provincial diagnostic laboratory and pcv-2 w ... | 2007 | 17824323 |