Map of U.S. states where flu activity is highest --CDC

The U.S. is in peak flu season, as the Centers for Disease Control (CDC) says "seasonal influenza activity remains elevated and continues to increase across the country."

Case counts vary by state, however. Each week, the CDC releases a map of influenza activity across the country.

The most current map reflects data from the week ending Feb 8, 2025.

Flu activity is currently highest in New York City, New Hampshire, Massachusetts, New Jersey, Maryland, Virginia, Ohio, Michigan, South Carolina, Tennessee, Nebraska, Kansas, New Mexico, Oregon and Washington.

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