title: Virology. China, Vietnam grapple with 'rapidly evolving' pig virus.
authors: Dennis
authors: D
authors: Normile
mesh_terms: D000818:Animals; D002681:China / Q000453:epidemiology; D004196:Disease Outbreaks / Q000662:veterinary*; D019143:Evolution, Molecular; D019318:Porcine Reproductive and Respiratory Syndrome / Q000453:epidemiology* / Q000821:virology*; D019316:Porcine respiratory and reproductive syndrome virus / Q000235:genetics / Q000472:pathogenicity*; D013552:Swine; D014744:Vietnam / Q000453:epidemiology