| a waterborne outbreak of escherichia coli o157:h7 infections and hemolytic uremic syndrome: implications for rural water systems. | in the summer of 1998, a large outbreak of escherichia coli o157:h7 infections occurred in alpine, wyoming. we identified 157 ill persons; stool from 71 (45%) yielded e. coli o157:h7. in two cohort studies, illness was significantly associated with drinking municipal water (town residents: adjusted odds ratio=10.1, 95% confidence intervals [ci]=1.8-56.4; visitors attending family reunion: relative risk=9.0, 95% ci=1.3-63.3). the unchlorinated water supply had microbiologic evidence of fecal orga ... | 2002 | 11971769 |