| sporadic occurrence of hemorrhagic colitis associated with escherichia coli o157:h7 in newfoundland. | during a 9-month period in 1984, 113 fecal samples obtained from 92 patients with diarrheal illness were cultured for escherichia coli serotype o157:h7 to determine the occurrence of this agent in diarrheal illness in newfoundland. e. coli o157:h7 was isolated in almost pure culture from 12 stool specimens obtained from 7 (15%) of the 47 patients who had grossly bloody diarrhea; none of the 12 yielded any of the usual enteric pathogens. the agent was not isolated from the stool specimens obtaine ... | 1986 | 3510070 |