Cases of cyclosporiasis, a nasty parasitic infection that causes “explosive” watery diarrhea, have sickened dozens of people in Michigan and other parts of the United States.

Michigan health officials are urging residents to take extra precautions when handling fresh fruits and vegetables as investigators work to identify the source of a cyclosporiasis outbreak that has si...

The Michigan state health department reported at least another 170 cases in seven counties over the past nine days.