Although the avian flu (H5N1) virus may not be making the news as frequently, it is still working hard behind the scenes, ...

New versions of the H5N1 virus are increasingly adept at spreading. Suggestions to either let it rip in poultry or vaccinate the birds could backfire.

The flu virus is changing in ways never seen before, increasing infections and raising concerns about vaccine effectiveness and public health risks.

Flu viruses that can use a second cellular entry point may move more effectively between animals and humans, scientists say.

No human cases have been reported in New York, but the avian virus was very common among certain wild birds on Long Island in 2022 and 2023.

Experts urge U.S. to prepare for possible new pandemic as H5N1 bird flu outbreak spreads with dairy animal and human cases. Here's what to know.

Messer says one interesting aspect of the virus’s structure is that it can pair well with lots of different host enzymes, which helps it slip inside the cells it binds to.

Here's what to know about flu symptoms in 2025, how to tell if it's something else, and how to protect yourself: What are flu symptoms? Fever, feeling feverish or chills; cough; sore throat; runny ...

Structural Biology Flu virus transcription caught in the act Cryo-EM experts make a movie of influenza’s replication machinery, which could lead to better antivirals by Louisa Dalton, special to ...

Scientists have an idea of how bird flu would have to evolve in order to spread more easily among humans: A mutation in one protein on the virus' surface could help it bind better human cells.

In 2024, bird flu mutated enough to cause infections among cattle. With dozens of human cases so far in California, and a state of emergency declared, here's how to think about your risks.

Experts warn about the possibility of a new pandemic in 2025 as the H5N1 bird flu virus spreads across all 50 states, impacting cows at US dairy farms, leading to human infections and raising ...