Officials say around 200 students at a Pennsylvania college have now reported symptoms of a stomach illness, but the source of the ailment remains a mystery. Ursinus College said Sunday that classes will resume on a regular schedule Monday after being canceled Thursday and Friday. Events during the weekend also were canceled. Officials said most reported that symptoms abated within 12 to 24 hours. Twenty-two students were treated at hospitals last week, but none was admitted.
The school's dining hall was closed after students began complaining of vomiting, diarrhea, and stomach pain Tuesday night. An initial inspection found violations that included pesticides near food, dead bugs, and insufficient hand-washing, reports WPVI. A subsequent inspection found no further issues, and the dining hall was reopened. Montgomery County health investigators are trying to determine whether the ailment is foodborne or transmitted from person to person. (Read more Ursinus College stories.)