An estimated 100 students at the Georgetown University fell ill and were treated for stomach illness, causing the shut down of the school's main dining hall.

The sickened students were treated at Georgetown University Hospital, where they went Tuesday, a day earlier, complaining about vomiting and nausea. "The symptoms were anusea, vomiting, diarrhea. And they got somewhat dehydrated, so IV fluids," stated Eric Glasser, a Georgetown physician. Yesterday in the morning, campus health officials were alerted and afterward started treating the students.

Moreover, Leo J. O'Donovan Dining Hall was closed for breakfast and lunch, Todd Olson, vice president for student affairs at Georgetown U, said in an e-mail addressed to the university community.

More than 20 cases required hospitalization and 25 students were treated for possible food poisoning. In spite of eating at the university’s dining hall, they didn’t eat the same types of food.

D.C. Department of Health officials are investigating the case. Up to now, the source of the illness hasn’t been identified. Health officials believe a virus or bacterial food poisoning led to the teenagers becoming ill. Food samples have been collected in order to be analyzed and students have been questioned about what they ate. In 48 hours the source of the stomach ailment will probably be known, according to Peggy Keller, chief of the bureau of community hygiene for the health department.

After having been notified via e-mail, lots of students were calm, saying they weren't particularly concerned about getting sick.