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If I am a healthy adult over age 65, does getting a flu shot reduce my chances of getting the flu or flu like illness more than not getting a flu shot?
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Flu vaccines VERY MODESTLY decrease flu-related infection in healthy adults over 65. 27 health adults over age 65 would need to receive the yearly flu vaccine to reduce one flu-like illness. There is no evidence that receiving flu vaccines reduces death in healthy adults over age 65.
1. Demicheli, V et. al. Vaccines for preventing influenza in the elderly. Cochrane Database Syst Rev. 2018 Feb 1;2:CD004876.