While returning from an economic development trip, New Orleans Mayor Ray Nagin may have been exposed to Swine flu. CNN has reported that another passenger on Nagin's flight is being treated for symptoms similar to that of the Swine flu and Nagin, his wife, and a member of his security detail are being held in quarantine. The Shanghai Municipal Center for Disease Prevention would not confirm the identities of those being quarantined, only saying that three Americans have been quarantined in a Shanghai hotel.