Harvard Health Blog

A bummer for kids: Nasal flu vaccine not effective

By: Claire McCarthy, M.D., Faculty Editor, Harvard Health Publications Every year, many of my patients have been able to skip the needle and still get vaccinated against the flu. That was the great thing about the nasal spray version of the flu vaccine, known as the LAIV (live attenuated influenza vaccine): kids scared of needles could get a squirt up each nostril and be all set. …

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