People in Green County with symptoms of an E. coli infection are being encouraged to contact their doctor, The Milwaukee Journal Sentinel reported. Officials say symptoms of E. coli O157:H7, the strain affecting Green County, can include severe stomach cramps, bloody diarrhea and vomiting.
"We haven't been able to identify a pattern with sickened individuals," Stephanie Smiley, director of communications for the Wisconsin Department of Health Services, said. "Because we haven't identified a source, we can't say people couldn't still become infected."
Two of the eight infected people have been diagnosed with hemolytic uremic syndrome, a potentially fatal form of kidney failure.
Notable deaths of 2014 [PHOTOS]