HOLLYWOOD, Calif. — Backstreet Boys member Brian Littrell has been diagnosed with the swine flu, the band revealed Monday on their Web site.

Fellow members Nick Carter, Howie Dorough and AJ McLean have all been seen by a doctor as a precaution but are not showing any signs of symptoms, the band said. As a preventive measure, the doctor has prescribed Tamiflu to the group and their touring party, who had just returned to the states from Tokyo.