People who visited the Clarice Smith Performing Arts Center at the University of Maryland, College Park within the past two days may have been exposed to a virus that caused dozens of teenagers to get sick this week.
University officials said yesterday that a person unrelated to the first group became ill at the arts center Tuesday.
The unidentified individual also had stayed at LaPlata Hall, the dormitory where the teen-agers were lodged before they became ill.
At least four of those students have tested positive for the Norwalk virus, a norovirus. The virus, which is highly contagious, causes nausea, vomiting, diarrhea and stomach cramps for up to two days.
The person who became sick at the arts center was part of a music camp.