1998 Two E. coli O157:H7 cases linked to county fair; both children developed HUS. Minnesota
The outbreak involved two cases who had attended a county fair; both children developed HUS. The specific source of infection for these two cases was not determined.
Minnesota Department of Health Disease Control Newsletter page 17 http://www.health.state.mn.us/divs/idepc/newsletters/dcn/sum98/9907dcn.pdf