The mayor of New Orleans, Ray Nagin, has been quarantined in China after possible exposure to the H1N1 virus, according to CNN.com. Nagin, who traveled to China on an economic development trip, flew on a plane that carried a passenger being treated for symptoms suspected to be from the virus, commonly known as the swine flu virus, the mayor’s office said in a statement on Sunday. Nagin, his wife and a member of his security detail have been quarantined in Shanghai, China, though all three are symptom free, the statement also said. Nagin had apparently been sitting beside a passenger who “exhibited the symptoms of H1N1 (also known as swine flu),” but Nagin showed no signs of illness.—BB