In the United States, the Centers for Disease Control confirmed that eight students of a high school in Queens had been infected with swine flu, the first confirmed cases in New York City, Mayor Michael Bloomberg said at a news conference on Sunday. Mr. Bloomberg said that all of the cases had been mild and hospitals in the city had not seen more patients with severe lung infections.
“So far there does not seem to be any outbreak,” Mr. Bloomberg said. “We don’t know if the spread will be sustained. What’s heartening is the people who tested positive have only mild illnesses.”