Harvard Women's Health Watch

Does the flu vaccine work as well in elderly people?

Ask the doctors Q. My mother is in her late 80s. She received the flu vaccine this year, but I heard that it wonít be as effective because of her age. Is this true? A. The flu vaccine can be less effective in elderly adults. Thatís because the flu vaccine works by priming the bodyís own immune system to mount a response to the virus if itís encountered. Older adults may have weaker…

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