UVA-LogoCHARLOTTESVILLE, Va. (AP) _ State health officials say more than a dozen University of Virginia students that fell ill last weekend had norovirus. The Virginia Department of Health is still trying to seek the cause of the outbreak that hospitalized within a 24-hour period. More students also showed gastrointestinal symptoms. The Daily Progress reports that officials say the outbreak may have been caused by an infected food handler or through person-to-person contact. Department spokeswoman Elizabeth Beasley said seven of eight samples collected by the department have tested positive for the virus. Symptoms of norovirus include vomiting, diarrhea, fever and body aches. Faculty, staff and students are being asked to practice good hygiene and avoid handling food if they think they are sick.