Among patients hospitalized with severe influenza, those with A(H1N1) have more high-risk clinical indicators vs those with other subtypes.

A new strain of influenza A, called H3N2, has caused a spike in infections in other countries, including areas of the ...

The variant is known as influenza A subtype H3N2 subclade K–sometimes called “subclade K” for short—and it has been detected ...

Last winter, for the first time since Covid-19 entered our world, influenza reclaimed its spot as the worst actor among the cast of viruses that sicken people during the cold and flu season. The ...

The seasonal influenza vaccine contains strains of viruses from distinct virus subtypes, but most people who are vaccinated will mount a strong immune response to one strain, leaving them vulnerable ...

A U.S. patient has tested positive for the H5N5 bird flu subtype for the first time. Learn how H5N5 differs from H5N1, what ...

This is a short series about a recent success on the road to developing a much sought-after broadly neutralizing vaccine against all influenza A viruses. If successful, it may act as a precursor to a ...

We're almost in the peak of flu season, with the CDC's recent report saying activity is "low but rising." Here's what ...

Since first being detected in Newfoundland in 2021, a subtype of highly pathogenic avian influenza, HPAI A(H5Nx), has had a ...