卫生类辅导资料:问题解答the centers
the centers for disease control and prevention has confirmed cases of swine (51） in eight students at a new york preparatory(预科的) school， mayor michael bloomberg said sunday. the students have had only (52) symptoms and none have been hospitalized， he said. some of the students have already recovered.
more than 100 students were absent from (53) due to flu-like symptoms last week. new york health officials tested samples for eight students saturday and determined the students were probably (54) from swine flu， and the cdc confirmed the (55) on sunday， bloomberg said.