Flu Season

Note: “Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2021-2022 Influenza Season” has been published.

Influenza Updates:

  • Overall, influenza (flu) activity is still low nationally, but CDC surveillance systems continue to detect slow but steady increases in flu.
  • Elevated influenza-like-illness is likely related to COVID-19.
  • 166.9 million doses of vaccine have been distributed.

CDC Recommends:

FluView A Weekly Influenza Surveillance Report Prepared by the Influenza Division

A weekly influenza surveillance report prepared by the Influenza Division. All data are preliminary and may change as more reports are received.

What to Know for the 2021-2022 Influenza Season

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Frequently asked question and answers for the 2021-22 influenza season.

Current Season Info For Health Care Providers

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Find current information on the 2021-22 flu season.​

Disease Burden Estimates

Flu Season

This web page provides estimates of flu cases, medical visits and hospitalizations for the 2019-2020 season.

FluSight Forecasting

flu forecasting

The Influenza Division at CDC has engaged with members of the scientific community on real-world influenza forecasting challenges known as FluSight.

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Flu Vaccine Finder

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Find flu vaccines in your area.
Everyone 6 months of age and older needs a flu vaccine.

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