Influenza (Flu) | CDC

Influenza (Flu)

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Resources for Health Care Providers on Coadministration of Influenza and COVID-19 Vaccines

Influenza Vaccine Recommendations

Flu Vaccine Recommendations for the 2021-2022 Flu Season

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Frequently Asked Influenza (Flu) Questions: 2021-2022 Season

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Take Action to Prevent Flu

How does flu make you sick?

How Does Flu Make You Sick?

Influenza Updates:

Laboratory-confirmed flu activity is low at this time.
A COVID-19 pandemic is ongoing.

Everyone 6 months & older should receive a yearly flu vaccine.

Everyone 6 months & older should receive a yearly flu vaccine.

Symptoms & Diagnosis

Flu can cause mild to severe illness. Learn the symptoms of flu.

Flu can cause mild to severe illness. Learn the symptoms of flu.

Doctor speaking to woman and child

Prescription medications called antiviral drugs can be used to treat flu.

Flu Activity & Surveillance

Flu Activity & Surveillance

Laboratory confirmed flu activity as reported by clinical laboratories remains low.

1918 Pandemic Flu Badge

Learn about flu season and get answers to questions.

Find information about current and past flu seasons.

People at Higher Risk

Understand who is at higher risk of flu.

Reports on Flu Vaccination Coverage and Utilization

Communication Resources

Find resources to promote flu prevention.

Health Professionals

Learn what CDC recommends this season.

Flu News & Spotlights

Read about CDC's work with flu.

Flu vs. COVID Symptoms

Learn the differences between Flu and COVID-19.

Other Types of Influenza

Stay Connected with Flu

What's New

CDC Reports Eighth and Ninth U.S. Human Infections with a Variant Flu Virus for 2020-2021 Influenza Season Friday, September 10, 2021
CDC Program Engages Partners to Promote Vaccine Equity Among Racial and Ethnic Minority Groups Friday, September 10, 2021
Early flu antiviral treatment can shorten hospital stays in children with flu, new CDC study shows Wednesday, September 1, 2021
Summary: 'Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices (ACIP)—United States, 2021-22' Thursday, August 26, 2021
Frequently Asked Influenza (Flu) Questions: 2021-2022 Season Thursday, August 26, 2021

Page last reviewed: September 21, 2021

Content source: Centers for Disease Control and Prevention, National Center for Immunization and Respiratory Diseases (NCIRD)