Sustained outbreaks in custodial institutions have been observed, suggesting that transmission by direct contact occurs in high-risk populations. In Georgia, surveillance for E. coli began in 1993. The increase in the number of cases in 1994, compared to the previous year, may be due to increased laboratory testing for E. coli as awareness of the disease increases among health care professionals. Georgia Epidemiology Report, January 1996, Vol. An infection of variable severity characterized by diarrhea, often bloody, and abdominal cramps.
Asymptomatic infections can occur.
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