We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleUpdate: Influenza activity--United States and worldwide, 2001-02 season, and composition of the 2002-03 influenza vaccine.AuthorsCenters for Disease Control and Prevention (CDC)PublicationMMWR. Morbidity and mortality weekly report, 2002, Vol 51, Issue 23, p503ISSN0149-2195Publication typearticle