Foodborne parasite sickens over 100 in Massachusetts; source unknown

A foodborne parasite has been wreaking havoc on people in Massachusetts — with more than 100 cases being reported since May, according to health officials. The microscopic culprit, Cyclospora, had only caused an average of 18 to 33 infections per year since 2016 before the most recent spike. “Most cases this year have occurred in...