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Influenza-Related Questions & Answers by Topic

Note: On June 22, 2016, CDC’s Advisory Committee on Immunization Practices (ACIP) recommended a change to U.S. influenza vaccination policy for 2016-2017. The ACIP recommendation must be reviewed and approved by CDC’s Director, and the final recommendations will be published in a CDC Morbidity and Mortality Weekly Report (MMWR), in late summer or early fall. The content of this website will be reviewed and updated prior to the 2016-2017 influenza season.

The Flu Season

Flu Vaccines & Preventing Flu Illness

Types of Flu Vaccines

Vaccine Virus Selection, Vaccine Safety & Supply

Flu Treatment & What to Do If You Get Sick

Flu & Other Diseases

Vaccine Information for Health Care Workers

Other Influenza Viruses