Vaccination control strategies to counter PRRS in Thailand

摘要

Around the world Porcine Reproductive and Respiratory Syndrome (PRRS) continues to have a serious economic impact on pig production. Asia is no exception and International Pig Topics recently spent some time with leading Thai pig veterinarian, Dr Winai, to find out how highly pathogenic PRRS has hit producers in that country and effectively been countered by vaccination strategies. Western Thailand has a high pig density and, historically, the detection of traditional PRRS was first made by seeing positive sera in 1989-90. Clinically, the first outbreaks were not that serious and were just attributed to 'a virus' and the clinical effects (of secondary bacterial infections) were controlled by antibiotics.