3881199 EAHEC enteroaggregative hemorrhagic Escherichia coli 7 3881196 EAHEC enteroaggregative-hemorrhagic E. coli 7 3881198 EAHEC Eastern Area Health Education Center 1 3881197 EAHEC enteroadherent hemolytic E. coli 1 3881200 EAHEC enterohemorrhagic and enteroaggregative E.coli 1