Update: influenza activity -- United States and worldwide, 2001-02 season, and composition of the 2002-03 influenza vaccine.(Statistical Data Included)

From: Morbidity and Mortality Weekly Report | Date: June 14, 2002 | Copyright information

The 2001--02 influenza season in the United States was mild to moderate. Influenza A (H3N2) viruses predominated, but influenza B viruses were identified more frequently than influenza A viruses toward the end of the season. Worldwide, influenza A (H3N2) and B viruses predominated. This report summarizes influenza activity in the United States * (September 30, 2001--May 18, 2002) and worldwide (October--May) during the 200 1--02 influenza season and describes the composition of the...

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