Shanghai confirmed its fifth case (already!) of swine flu over the weekend. This time, the patient was a 23-year-old female college student who had been studying in the U.S. She had taken a flight from New York to Hong Kong on Thursday. On Saturday, she developed a fever and was quarantined at Shanghai No.1 People’s Hospital. Eight family members and friends are under medical observation for the week. Shanghai’s first case, a businessman who had flown in from Melbourne, has recovered and is now out and about town.