Harvard University's dental school and treatment clinic have been temporarily closed by city health officials after several third- and fourth-year students developed "probable cases" of swine flu, according to the Boston Globe.
At least nine students are so far thought to be infected with the virus. The school and the clinic are closed until at least May 6, according to officials.
The clinic treats about 50 patients a day, and the dental school has more than 200 students, faculty, and other staff members, the Globe noted.
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