The New York City health department dispatched a team of investigators to a private school in Queens on Friday after dozens of students complained of symptoms that officials believed were consistent with a strain of swine flu that has swept Mexico City.
The agency said about 75 students at St. Francis Preparatory School had complained Thursday of nausea, fever, dizziness and aches and pains. Several of the students were said to have recently traveled to Mexico, where as many as 61 people have died and possibly hundreds more have been infected in an outbreak of swine flu in recent weeks.
To control the epidemic, Mexican officials have shut museums and closed schools in and around the capital.
Officials at the Centers for Disease Control and Prevention have said that eight cases have been diagnosed in the United States, six in California and two in Texas.