| bluetongue, epizootic haemorrhagic disease of deer and related viruses: current situation in australia. | since 1975 3 serotypes of bluetongue (bt) virus (btv) have been identified in australia: btv1 (csiro156), btv20 (csiro19) and btv21. at present 2 further bt viruses (dpp90 and dpp192) have been isolated from the blood of healthy cattle in the northern territory (nt) and are undergoing identification. there is serological evidence for btv15 infection in western australia (wa) and the nt, and a background level of serological activity to btv serotypes 1 to 17. in addition, over 50 isolations of ep ... | 1985 | 2989863 |