MMWR Morb Mortal Wkly Rep. 2002 Jun 14;51(23):503-6.
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 2001-02 influenza season and describes the composition of the 2002-03 influenza vaccine.
美国2001 - 2002年流感季节为轻度至中度。甲型（H3N2）流感病毒占主导，但在该季节末期，乙型流感病毒的检出频率高于甲型流感病毒。在全球范围内，甲型（H3N2）和乙型流感病毒占主导。本报告总结了2001 - 2002年流感季节美国（2001年9月30日至2002年5月18日）和全球（10月至5月）的流感活动情况，并描述了2002 - 2003年流感疫苗的成分。
