Titers for Vaccine vs Natural Immunity By Vincent Iannelli, MD / March 27, 2019 / antibodies, artificial immunity, immunity, natural immunity, negative titers, titer testing, titers, vaccine induced immunity, Vaccine Preventable Diseases In most circumstances, a titer just tells you that you are immune. Share this:FacebookTwitterRedditPrintLinkedInPinterestEmailTumblrWhatsAppLike this:Like Loading...