| the occurrence of antibody to bluetongue virus in new south wales. ii. coastal region and age distribution surveys. | three surveys of cattle for bluetongue (blu) antibody were conducted over the years 1978-1980 in coastal areas of new south wales. in each survey the samples were identified by age. the prevalence of blu-group antibody, demonstrated in a gel diffusion precipitin test, was highest in the north and decreased progressively to the south. antibody prevalence increased with age. however, according to variations in prevalence by age and region, it was concluded that the activity of relevant viruses was ... | 1988 | 2856015 |
| serological studies of australian and papua new guinean cattle and australian sheep for the presence of antibodies against bluetongue group viruses. | following isolation of a virus (csiro19) from insects in australia and its identification as bluetongue virus serotype 20 (btv20), a nationwide survey of antibodies in cattle and sheep sera was undertaken. initial studies using the serum neutralization (sn) test showed that the distribution of btv20 antibodies in cattle was confined to the northern part of australia. group-reactive antibody tests (agar gel diffusion precipitin, agdp, and complement-fixation, cf) showed group-reactive cattle sera ... | 1983 | 6306901 |
| laboratory and field studies of an antigen capture elisa for bluetongue virus. | an improved bluetongue antigen capture elisa (btace) technique was evaluated for its ability to detect the full range of 24 bluetongue (blu) serotypes. the btace detected all 24 serotypes in cell culture fluids, including eight serotypes where the representative strains originated from both australia and also from the south african reference collection. the amount of infectious virus required to obtain a positive btace result varied between 100-1000 tcid50. this was approximately 10-fold more se ... | 2000 | 10716347 |
| models for the dispersal in australia of the arbovirus vector, culicoides brevitarsis kieffer (diptera: ceratopogonidae). | culicoides brevitarsis is the main biting midge responsible for the transmission of bluetongue and akabane viruses to livestock in australia. models are given for its dispersal after winter from endemic areas at the southern limit of its distribution in new south wales (nsw); the models might also be applicable elsewhere. model 1 shows that dispersal can be explained by distance from a key point just outside the endemic area in mid-northern/northern coastal nsw. the model provides probability da ... | 2000 | 11087955 |