A suspected swine flu patient is escorted by a quarantine officer to an ambulance for testing of the swine flu at a hospital at the Narita International Airport on April 30, 2009. A Japanese woman, who arrived at Narita airport on a Northwest Airlines flight, was the first arrival to be tested and then isolated under strict new rules announced this week after the Mexico outbreak. Getty Images logo Getty Images 6 months ago

A suspected swine flu patient is escorted by a quarantine officer to an ambulance for testing of the swine flu at a hospital at the Narita International Airport on April 30, 2009. A Japanese woman, who arrived at Narita airport on a Northwest Airlines flight, was the first arrival to be tested and then isolated under strict new rules announced this week after the Mexico outbreak.