| variation amongst the neutralizing epitopes of bluetongue viruses isolated in the united states in 1979-1981. | neutralizing epitopes present on field isolates of bluetongue virus (btv) serotypes 10, 11, 13 and 17 were evaluated with a panel of polyclonal and neutralizing monoclonal antibodies (mabs). a total of 91 field isolates were evaluated, including 15 isolates of btv-10, 29 isolates of btv-11, 26 isolates of btv-13, and 21 isolates of btv-17. the viruses were isolated from cattle, goats, sheep, elk and deer in idaho, louisiana, nebraska and, predominantly, california, in the years 1979, 1980 and 19 ... | 1992 | 1379766 |
| retrospective serological study on bluetongue antibody prevalence in a louisiana herd. | | 1985 | 2997956 |
| prevalence of bluetongue viral antibodies in louisiana goats. | | 1981 | 6278995 |
| bluetongue infections in louisiana cattle. | bluetongue virus (btv) serotype 17 was isolated from cattle with clinical signs of bluetongue disease during 1978 and 1979 epizootics. bovine sera from 6 herds located in an epizootic region were examined in 1979 for antibodies, using an immunodiffusion (id) test. of 300 sera, 164 (54.7%) were seropositive. sera from statewide surveys of louisiana cattle in july to august 1980 and december 1980 to january 1981 were tested for btv antibodies, using the id test. fifty-eight of 70 herds (82.9%) and ... | 1982 | 6283967 |
| prevalence of bovine herpesvirus-1, bovine viral diarrhea, parainfluenza-3, goat respiratory syncytial, bovine leukemia, and bluetongue viral antibodies in sheep. | sera from healthy sheep were collected in january and march 1982 from flocks of sheep located in southwestern and southeastern louisiana. these sera were tested for bovine herpesvirus-1 (bhv-1), bovine viral diarrhea virus (bvdv), parainfluenza-3 (pi-3) virus, and goat respiratory syncytial virus (grsv) antibodies by microtitration virus-neutralization test. the sera were tested also for bovine leukemia virus (blv) and bluetongue virus (btv) antibodies by immunodiffusion tests. the number of flo ... | 1984 | 6329044 |
| bluetongue virus in sheep and cattle and culicoides variipennis and c. stellifer (diptera: ceratopogonidae) in louisiana. | the transmission of bluetongue virus (blu) to sheep and cattle relative to culicoides abundance and infection was studied in two areas of the louisiana state university agricultural center, baton rouge, la. the seroprevalence of blu in beef cattle was 70.5% in 1989 and 37.0% in 1990; 2 of 37 animals tested in both years became positive, indicating active transmission. the prevalence of blu in sheep decreased from 52.2% in 1989 to 34% in 1990; seroconversion was not detected. serotypes of positiv ... | 1993 | 8395602 |
| first report of bluetongue virus serotype 1 isolated from a white-tailed deer in the united states. | in november 2004, tissues were collected from a hunter-killed white-tailed deer in st. mary parish, louisiana. bluetongue virus (btv) was isolated from the tissues; however, the isolate could not be identified as any of the us domestic serotypes. subsequent testing by virus neutralization using serotype-specific antiserum tentatively identified the isolate as btv serotype 1 (btv-1), which had not previously been found in the united states. primers were designed based on the sequence of an outer ... | 2006 | 16921883 |
| detection of bluetongue virus rna in field-collected culicoides spp. (diptera: ceratopogonidae) following the discovery of bluetongue virus serotype 1 in white-tailed deer and cattle in louisiana. | in november 2004, bluetongue virus (family reoviridae, genus orbivirus, btv) serotype 1 (btv-1) was detected for the first time in the united states from a hunter-killed deer in st. mary parish, la. in 2005, sera surveys were conducted on three cattle farms near the area where the deer was found, and btv-1-seropositive cattle were found on two of the three farms; in 2006, sera surveys from the cattle on the three farms did not detect any btv-1-positive animals. the purpose of this study was to s ... | 2010 | 20380309 |