https://ift.tt/2wwdHAe Would Two Flu Shots Protect Me Better Than One? Vaccination and Immunization, Influenza Booster doses can make the flu vaccine more effective, but the benefit is limited to a few specific groups. RICHARD KLASCO, M.D. https://ift.tt/2DsJ7tW November 9, 2018 at 05:30AM
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