Flu Vaccine Provided Substantial Protection This Season

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Flu vaccination reduced risk of flu-related hospitalization among children by nearly three quarters.

February 24, 2023

	Influenza (Flu) 2022 - 2023 Flu Season

www.cdc.gov/flu

Weekly U.S. Flu Activity Report Flu activity is low across the country, but annual flu vaccination is recommended as long as flu activity is ongoing.

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	Flu Vaccine Provided Substantial Protection This Season Interim flu vaccine effectiveness (VE) estimates show that this season’s flu vaccines offered substantial benefit against flu illness, flu visits to the emergency department or urgent care, and flu hospitalization. Benefit from vaccination was observed across all age groups. These estimates came from three different VE networks.  Learn More

	Why CDC Estimates Flu Vaccine Effectiveness CDC studies how well flu vaccines are working each year. Vaccine effectiveness estimates help inform vaccine policy and also can be used to help CDC estimate the burden of flu and the burden prevented by vaccination. VE estimates also inform the annual selection of the vaccine viruses used for production of the next season’s flu vaccines. Learn More

	Twitter @CDCFlu #Flu antiviral drugs work best when you start them within two days of getting flu symptoms. #Antivirals can lessen symptoms and even shorten the time you are sick. https://bit.ly/2SO61Ty

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