Has This Really Been the Longest Flu Season in a Decade? By Vincent Iannelli, MD / April 24, 2019 / flu season, flu season end, flu season extension myth, flu season start, flu vaccine myths, flu vaccines, ILI, indefinite flu season, late flu season, peak of flu season, Vaccine Preventable Diseases How long does flu season usually last? Share this:FacebookTwitterRedditPrintLinkedInPinterestEmailTumblrWhatsAppLike this:Like Loading...