Table 4. Serotype determination of human STEC isolates collected in Korea, 2003–2014.

STEC, Shiga toxin-producing Escherichia coli. ^*Hnt indicates that the H antigen was non-typeable. ^†Diarrhea represents a patient with only watery diarrhea without blood stool. Among ninety-six O91:H14 isolates, 78 were identified from asymptomatic carriers and the others were obtained from diarrhea patients. ^‡Metropolitan cities (BS, Busan; GJ, Gwangju; IC, Incheon) or provinces (CN, Chungnam; GG, Gyeonggi; JN, Jeonnam) associated with human cases of STEC infection in Korea, 2003–2014.