Severe respiratory disease in dairy cows caused by infection with bovine respiratory syncytial virus

摘要: Outbreaks of severe respiratory disease caused by bovine syncytial virus (BRSV) were recorded in dairy herds throughout Sweden 1988 and subsequently. The was demonstrated nasopharyngeal swab material from animals the acute stage culture, polymerase chain reaction (PcR) immunofluorescence. Serological data investigated showed that cows had seroconverted to BRSV rather than coronavirus, viral diarrhoea or parainfluenza-3 virus. It predominantly isolated areas contracted a primary infection, often after purchase new animals. A nationwide survey for antibodies bulk milk samples highest prevalence, 84 89 per cent, southernmost regions lowest 41 51 north country. prevalence with populations cattle.