| prevalence of antibodies against parainfluenza virus type 3, respiratory syncitial virus and bovine herpesvirus type 1 in sheep from northern prefectures of japan. | ovine sera collected in the prefectures of hokkaido, aomori and iwate in the northern japan were examined for the presence of antibodies against respiratory syncytial virus (rsv), bovine herpesvirus type 1 (infectious bovine rhinotracheitis: ibr) and parainfluenza virus type 3 (piv3) using serum neutralisation (sn) and enzyme-linked immunosorbent assay (elisa) tests. twenty-three animals (11.73%) out of the 196 tested were sero-positive to piv3. sixteen animals (8.69%) out of the 184 tested reac ... | 2013 | 24166480 |