| porcine reproductive and respiratory syndrome virus (prrsv) infection status in pigs naturally affected with post-weaning multisystemic wasting syndrome (pmws) in spain. | the purpose of the study reported here was to determine the prevalence of porcine reproductive and respiratory syndrome virus (prrsv) in pigs affected with post-weaning multisystemic wasting syndrome (pmws), a disease believed to be caused by porcine circovirus type 2 (pcv2). from may 1997 to february 2000, pmws was diagnosed in 277 pigs (from 120 farms) submitted to the veterinary pathology diagnostic service, veterinary school of barcelona, spain. in each case, the pmws diagnosis was based on ... | 2002 | 11792488 |