Track the flu in your area
The flu can be unpredictable, so it's important to be prepared this flu season. For quick and effective diagnosis based on clinical symptoms, it may be helpful to know the prevalence of flu in your area and throughout the country.
Select a state for week-by-week detailed reports
National Map View
Select a date to see the reported flu activity in the U.S.
Flu activity in - is -.
For the week ending on -
Source: U.S. Centers for Disease Control and Prevention (CDC). Data is based on influenza-like illness (ILI) activity as reported by state outpatient healthcare providers. ILI is defined as fever and cough and/or sore throat with influenza as the only known cause. Weekly reports are published approximately 10-12 days after the "week ending" date, due to the time required to compile national data.
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*Median time vs. placebo (54 hours vs 80 hours).