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How does the flu shot work?

ANSWER

The vaccine tells your body to make antibodies to fight certain strains of the virus. Doctors choose strains based on the ones they think are most likely to show up that year. The vaccine takes about 2 weeks to work. You can get sick even if you get one, but your illness will likely be milder than if you skip the vaccine.

SOURCES:

CDC: "Estimating Seasonal Influenza-Associated Deaths in the United States: CDC Study Confirms Variability of Flu," “Key Facts About Seasonal Flu Vaccine.”

Flu.gov. 

American Lung Association.

National Institute of Allergy and Infectious Diseases: "Flu (Influenza): Prevention."

National Jewish Medical and Research Center: "Is it better to use a flu inhaler or get a flu shot?"

American Lung Association: "Cold and Flu Guidelines: Influenza."

FDA: "Influenza: Vaccination Still the Best Protection."

MedlinePlus: "Flu," "Common Cold."

GlaxoSmithKline.

Flu Near You website.

News release, American College of Allergy, Asthma and Immunology.

Reviewed by Neha Pathak on July 12, 2017

SOURCES:

CDC: "Estimating Seasonal Influenza-Associated Deaths in the United States: CDC Study Confirms Variability of Flu," “Key Facts About Seasonal Flu Vaccine.”

Flu.gov. 

American Lung Association.

National Institute of Allergy and Infectious Diseases: "Flu (Influenza): Prevention."

National Jewish Medical and Research Center: "Is it better to use a flu inhaler or get a flu shot?"

American Lung Association: "Cold and Flu Guidelines: Influenza."

FDA: "Influenza: Vaccination Still the Best Protection."

MedlinePlus: "Flu," "Common Cold."

GlaxoSmithKline.

Flu Near You website.

News release, American College of Allergy, Asthma and Immunology.

Reviewed by Neha Pathak on July 12, 2017

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Who should get the flu shot?

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