Flu activity continues to remain elevated in the United States, according to newly released data from the Centers for Disease Control and Prevention.

After a record week of flu activity in the US, hospitalizations and deaths continue to rise. About 40,000 people were admitted to the hospital with flu during the week ending January 3, according to data published Friday by the US Centers for Disease Control and Prevention,

Seasonal influenza activity remained elevated and rose in the final week of December, U.S. Centers for Disease Control and Prevention data showed on Monday, as the agency for the first time classified the 2025-26 season as "moderately severe.

Flu activity could continue to increase in the U.S. over the next few weeks, according to a top flu epidemiologist at the Centers for Disease Control and Prevention. "There's a lot of influenza out there right now,

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At least 64 cases in 22 states have been identified so far, though the true toll is "likely much higher," CDC health officials say.

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Tennessee was one of 19 states experiencing “very high” flu activity at Level 13, the CDC’s highest level, on Dec. 27, 2025.

The CDC currently recommends that people receive two doses of the MMR vaccine, the first at ages 12 to 15 months and the second between 4 and 6 years old. One dose is 93% effective, and two doses are 97% effective against measles, the CDC says.

The already rough 2025-2026 season is especially being effected by the spread of a “super” variant called subclade K. Nearly all states currently sit at the CDC’s influenza activity level of “high” or “very high,” including Ohio.