Influenza (Flu) | CDC

Influenza (Flu)

Join the Fight Against Flu! Everyone 6 months and older needs a flu vaccine each year.

Join the Fight Against Flu! Everyone 6 months and older needs a flu vaccine each year.

Flu activity is widespread in most of the U.S. Take action to prevent flu!

Flu vaccination has been shown to prevent flu illnesses, doctors' visits and hospitalizations and can be life-saving in children

View national and state-level influenza vaccination coverage estimates using interactive maps, trend lines, bar charts and data tables.

How many people got a flu vaccine? View FluVaxView

FluView Interactive

FluView Interactive: Surveillance Data the Way You Want It!

FluSight

Can we predict flu? Learn about CDC's efforts to predict flu activity and find the latest flu forecasts each week

Influenza Updates:

U.S. flu activity is increasing.
Now is the time to get a flu vaccine!

CDC on Flu Vaccine:

166.4 million doses of flu vaccine have been distributed.
CDC recommends everyone 6 months and older get a flu vaccine each season. Find vaccineexternal icon!
Flu vaccination has important benefits.

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.

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

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

Flu Activity & Surveillance

Outpatient Illness: ILI Activity Map

Seasonal influenza activity in the United States continues to increase.

1918 Pandemic Flu Badge

Learn about flu season and get answers to questions.

Find information about current and past flu seasons.

People at High Risk

Understand who is at high risk from flu.

Communication Resource Center

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 Vaccine Finder

Find a flu vaccine near you.

Other Types of Influenza

Stay Connected with Flu

What's New

Weekly U.S. Influenza Surveillance Report Monday, December 2, 2019
Update: Interim Guidance for Health Care Providers for Managing Patients with Suspected E-cigarette, or Vaping, Product Use–Associated Lung Injury — United States, November 2019 Thursday, November 21, 2019
Influenza Division Director Recognized Among Best in Federal Service Thursday, October 24, 2019
Flu Forecasting Accuracy Results for the 2018-2019 Season Wednesday, October 16, 2019
Update: Influenza Activity — United States and Worldwide, May 19–September 28, 2019, and Composition of the 2020 Southern Hemisphere Influenza Vaccine Friday, October 11, 2019

Page last reviewed: December 2, 2019

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