Flu Activity & Surveillance
Note: “Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2019–20 Influenza Season” has been published. CDC recommends annual influenza vaccination for everyone 6 months and older with any licensed, influenza vaccine that is appropriate for the recipient’s age and health status, (IIV, RIV4, or LAIV4) with no preference expressed for any one vaccine over another. Content on this website is being updated to reflect this most recent guidance. More information about the upcoming 2019-2020 flu season is available.
A brief overview of flu activity in the United States highlighting key data points from the weekly influenza surveillance report, FluView.
A weekly influenza surveillance report prepared by the Influenza Division. All data are preliminary and may change as more reports are received.
Influenza surveillance data the way you want it. This series of dynamic visualizations allow any Internet user to access influenza information collected by CDC’s monitoring systems.
The influenza activity reported by state and territorial epidemiologists indicates geographic spread of influenza viruses, but does not measure the severity of influenza activity.