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, 1997-98 season, and composition of the 1998-99 influenza vaccine.AuthorsCenters for Disease Control and Prevention (CDC)PublicationMMWR. Morbidity and mortality weekly report, 1998, Vol 47, Issue 14, p280ISSN0149-2195Publication typearticle