The peak of the flu season awaits us and may bring many severe cases and hospitalizations due to a new, menacing variant.

U.S. flu rates remain low, but experts are keeping an eye on a new strain that’s been linked to unexpectedly early and severe ...

The CDC monitors respiratory illness activity by looking at a range of diagnoses from emergency department (ED) visits, ...

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to know.

A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concerns about a severe flu season in the ...

An unexpected mutation of the H3N2 influenza A virus is driving up case counts abroad, and experts are concerned it could ...

The first human to have ever been infected with H5N5 strain of bird flu has died, Washington state health officials confirmed ...

A strain of bird flu never seen in humans has infected a Washington state resident and left the person hospitalized, state ...

The person, who had been hospitalized in King County since early November, died on Nov. 21, health officials said.

According to a new study, an evolutionary shift around 2020 helped the bird flu virus adapt better to wild birds.

The Iowa Department of Health and Human Services (HHS) announces today the first influenza-related death of the 2025-26 ...

Flu cases are growing or likely growing in 39 states, according to the latest Centers for Disease Control and Prevention data from Nov. 11.