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How long does it take for a flu shot to work?

ANSWER

About two weeks after getting a flu shot or FluMist, antibodies that provide protection against the flu viruses develop in your body.

From: Types of Flu WebMD Medical Reference

SOURCES:

CDC: "Estimating Seasonal Influenza-Associated Deaths in the United States: CDC Study Confirms Variability of Flu." National Institute of Allergy and Infectious Diseases: "Flu (Influenza): What Are Seasonal Flu, Avian (Bird) Flu and Pandemic Flu?" American Lung Association: "Cold and Flu Guidelines: Influenza." FDA/CFAN: "What consumers need to know about avian influenza." American Academy of Family Physicians: "Bird Flu (Avian Flu)." GlaxoSmithKline. News release, FDA.  






 

Reviewed by Carol DerSarkissian on August 24, 2017

WAS THIS ANSWER HELPFUL

SOURCES:

CDC: "Estimating Seasonal Influenza-Associated Deaths in the United States: CDC Study Confirms Variability of Flu." National Institute of Allergy and Infectious Diseases: "Flu (Influenza): What Are Seasonal Flu, Avian (Bird) Flu and Pandemic Flu?" American Lung Association: "Cold and Flu Guidelines: Influenza." FDA/CFAN: "What consumers need to know about avian influenza." American Academy of Family Physicians: "Bird Flu (Avian Flu)." GlaxoSmithKline. News release, FDA.  






 

Reviewed by Carol DerSarkissian on August 24, 2017

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

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