Abstract
Thirty-eight strains of bovine rhinovirus (BRV) were isolated in primary cultures of calf kidney cells from nasal secretions of cattle with respiratory symptons in Hiroshima Prefecture over a period from 1975 to 1981.Of them, 32 strains were identified as BRV 1 type (BRV-1). The remaining six strains could be distinguished from the known serotypes 1 and 2 of BRV by the neutralization (NT) test.Most cattle clinically affected with respiratory disease showed a significant rise in NT antibody titer against type 1 or the new serotype of BRV. None or a few of them showed a serological evidence of recent infection with BRV-2, bovine respiratory syncytial virus, bovine herpesvirus type 1, parainfluenza virus type 3, and bovine adenovirus type 7.The NT test on bovine sera revealed a wide dissemination of types 1 and 2 and the new serotype of BRV among cattle in Hiroshima Prefecture.
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