an epidemiological study of selected calf pathogens on holstein dairy farms in southwestern ontario.fecal samples from calves on 78 randomly selected holstein dairy farms in southwestern ontario were screened for salmonella, campylobacter jejuni/coli, enteropathogenic escherichia coli, rotavirus and coronavirus. based on the observed prevalence, 22% of farms had calves infected with salmonella, 13% with campylobacter jejuni/coli, 41% with enteropathogenic e. coli, 19% with rotavirus and 5% with coronavirus. these estimates can be modified, using a method developed by mullen and prost (1983) fo ...19863017528
campylobacter colitis in ranch mink in ontario.outbreaks of colitis, where campylobacter jejuni and campylobacter coli were the only pathogens isolated occurred in weanling mink (mustella vision) on two commercial mink ranches in ontario. lesions were restricted to the proximal colon and were characterized by multiple 1 mm focal or 1 mm linear erosions/ulcers in the region 2 cm distal to the ileal-colonic junction. histological changes included thickening of the colonic mucosa, inflammatory cell infiltrate in the lamina propria and submucosa ...19863742356
rate of campylobacter spp. isolation in three regions of ontario, canada, from 1978 to 1985.isolation rates of campylobacter spp. were analyzed for an 8-year period, 1978 through 1985. three laboratories of the ontario ministry of health examined 146,842 human feces samples for bacterial pathogens, including campylobacter jejuni and campylobacter coli. campylobacter spp. were isolated from 5,580 specimens (3.8%), with monthly isolation rates ranging from 1.1 to 7.4%. the data showed a seasonal distribution of isolations, with peaks during the summer months (june to september). most inf ...19863771774
campylobacter fetus in artificial insemination unit and slaughterhouse bulls in ontario.preputial fluid samples were collected from 90 bulls in two ontario artificial insemination units using a penial glove swab technique previously developed by one of us for use in donor bulls. no campylobacter fetus organisms were identified from the prepuce or from samples of semen collected at the same time from these bulls. the distal genitalia of 200 bulls were collected at a slaughter house. one isolation of a campylobacter fetus subspecies venerealis was obtained on a culture from the forni ...19853893662
premature labor and neonatal sepsis caused by campylobacter fetus, subsp. fetus--ontario. 19846431256
incidence of campylobacter jejuni in fresh eviscerated whole market chickens. 19817296414
walkerton, 2 years later: "memory fades very quickly". 200212041857
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