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incidence per 100,000 children
median days of hospitalization
range of hospitalization days
of HUS patients died
† O157 and non-O157 includes cases that are confirmed to have O157 and one or more non-O157 serogroups
‡ Multiple non-O157 includes any combination of non-O157 serogroups
- Culture confirmed: shows the percentage of patients who tested positive for STEC infection by culture. Culture-positive STEC infections are Shiga toxin positive. Patients may also be positive for STEC O157 by serology.
- Serology positive: shows the percentage of patients who tested positive for STEC O157 by serology. These patients do not have a culture-confirmed STEC infection but they may have tested positive for Shiga toxin by other methods.
- Shiga toxin-positive only: shows the percentage of patients who tested positive for Shiga toxin.
- No evidence of STEC: shows the percentage of HUS patients who did not test positive for STEC infections. This includes patients who were not tested for STEC infection or who tested negative for STEC infection.
Confirmed infections of STEC O157 and non-O157 in children (right axis) from FoodNet pathogen surveillance and postdiarrheal HUS (left axis) in children from HUS surveillance