Alert
Sick, young girl in bed

Flu vaccine myths

SEP 29, 2014
  • Share this:
  • Linkedin

Many people choose not to have the influenza vaccine because of myths they believe about the disease or the vaccine.

 

Myth: Influenza is a minor illness.

Truth: Influenza and its complications caused from 3,000 to 49,000 deaths each year from 1976 to 2006 in the United States.1

 

Myth: The vaccine causes the flu.

Truth: You can’t get the flu by having a flu shot. The flu shot is made of killed virus and therefore cannot cause the flu. And the weakened viruses in the flu nasal spray vaccine can cause symptoms similar to a cold, but they can’t cause the flu.

 

Myth: The vaccine causes unpleasant side effects.

Truth: The vaccine causes no side effects in most people. Earlier vaccines (1940s to 1960s) did have more unpleasant side effects, but this is rare now. And an intradermal flu shot is available. A smaller needle is used, and the vaccine is injected into the skin instead of the muscle to reduce discomfort at the time of the shot.

 

Myth: The vaccine is ineffective because some people had a flu-like illness after getting a flu vaccine.

Truth: Although getting the vaccine prevents most people from becoming ill with the flu, some people still become infected. This may occur because a person is exposed to the virus before getting a vaccination or before it has taken effect, or because the vaccine does not match the circulating virus closely enough. A mild illness similar to a cold also can be caused by the live, weakened viruses in the influenza nasal spray vaccine. But any illness is usually milder than it would be without having had the vaccine.

 

Current as of: September 9, 2014

Author: Healthwise Staff

Medical Review: E. Gregory Thompson, MD – Internal Medicine & Christine Hahn, MD – Epidemiology

 

This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to theTerms of Use. How this information was developed to help you make better health decisions.

© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.

The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.

TOPICSFluprevention