| demonstration of serum-neutralising antibody to turkey rhinotracheitis virus in serum from chicken flocks in japan. | since between 1989 and 1991, broiler, broiler breeder and layer chickens reared in three different prefectures of japan, hyogo, ibaraki, and miyazaki, were diagnosed clinically as having swollen head syndrome (shs) these flocks were survey for antibody to turkey rhinotracheitis (trt) virus using a serum neutralisation (sn) test. trt-specific sn antibody was found in flocks of chickens in 2 out of the 3 prefectures. thereafter, particular in the summers of both 1993 and 1994 outbreaks of shs occu ... | 1996 | 8898285 |