Why Do Some Vaccines Need Boosters? By Vincent Iannelli, MD / May 23, 2018 / antibodies, antigens, booster doses, boosters, duration of protection, immune response, plasma cells, primary series, Vaccine Education, waning immunity Have you ever wondered why some vaccines need booster doses and some don’t? Share this:FacebookTwitterRedditPrintLinkedInPinterestEmailTumblrWhatsAppLike this:Like Loading...