prevalence of serotypes g6 and g10 group a rotaviruses in dairy calves in quebec.fecal samples from diarrheic and nondiarrheic dairy calves (1 to 3 weeks old) from 12 regions of quebec, collected between 1992 and 1994, were screened for group a bovine rotavirus (brv) using a combination of 2 vp6-specific monoclonal antibodies (mabs) in an enzyme-linked immunosorbent assay (elisa). the overall prevalence of brv infection was 26.4% (107/405). in diarrheic calves, brv infection reached 74.3% (55/74), but only 15.7% (52/331) in nondiarrheic calves. brv-positive samples were sero ...19958521359
viral agents associated with outbreaks of diarrhea in turkey flocks in quebec.the relative importance of various enteric viruses associated with diarrhea of turkey poults was investigated by an evaluation of specimens received since 1982. specimens originated from one to eight week old turkey poults, with mild to severe diarrhea, from 114 flocks in 42 commercial operations located in southern quebec. the acute phase of enteritis occurred usually in poults between two and four weeks of age. clarified intestinal contents were examined by direct electron microscopy and enzym ...19882832044
genomic variations and antigenic relationships among cytopathic rotavirus strains isolated in quebec dairy herds.twelve isolates of bovine rotavirus, originating from eight dairy herds in quebec known to have frequent epizootics of diarrhea in young calves in the last five years, were successfully propagated in cell cultures. the 12 isolates produced clear-cut plaques in bsc-1 cells and, except for one isolate, agglutinated human group "o" erythrocytes to an higher titer than bovine erythrocytes. antisera to each isolate were produced in rabbits and used to study their antigenic relationships. all the isol ...19863017524
a seroepidemiological study of the importance in cow-calf pairs of respiratory and enteric viruses in beef operations from northwestern quebec.serum antibody analyses for bovine herpesvirus type 1 (bhv-1), bovine viral diarrhea virus (bvdv), bovine respiratory syncytial virus (brsv), bovine coronavirus (bcv), and bovine rotavirus (brv) were performed on 527 randomly selected cows, before calving, and on 407 three-week-old calves. in cows and calves, bcv and brv were the most seroprevalent viruses (80% to 100% according to virus and vaccination status). bovine respiratory syncytial virus was the least seroprevalent in the cows, independ ...19957704839
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