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About Flu

Note: “ACIP Recommendations for the Use of Quadrivalent Live Attenuated Influenza Vaccine (LAIV4) — United States, 2018–19 Influenza Season” appeared in an MMWR report on June 8, 2018. The full ACIP recommendations on the Prevention and Control of Seasonal Influenza with Vaccines will be published later this summer. Content throughout the rest of the influenza web site will be updated over the coming weeks.

Flu Burden Averted

Learn how CDC has estimates the burden of influenza and the impact of annual influenza vaccination in the U.S.

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Influenza (flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness. Serious outcomes of flu infection can result in hospitalization or death. Some people, such as older people, young children, and people with certain health conditions, are at high risk of serious flu complications.

 

The best way to prevent flu is by getting vaccinated each year.

Get Vaccinated
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