Sporadic human infections with avian influenza A viruses have caused a wide spectrum of illness. As these novel influenza A viruses pose pandemic potential, timely detection and characterization of ...

Each year, public health officials monitor the spread of influenza to identify which flu strains need to go into that year's vaccines and where outbreaks will occur. But it can be difficult to predict ...

During the early stages of a pandemic, viruses tend to evolve in ways that enhance their ability to reproduce and spread, ...

Temporal dynamics in divergence and adaptive fixation of the H5 AIV HA gene, in different host-specific lineages. Credit: Science Advances (2025). DOI: 10.1126/sciadv.ado9140 A team of virologists, ...

WASHINGTON (AP) — Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to ...

This year’s flu season is shaping up to be a nasty one—driven by a new variant of the influenza virus that may be able to slip past our vaccine defenses. A mutated form of the influenza A strain H3N2 ...

Vaccinating birds against bird flu reduces the spread of the disease, but may have unintended consequences. This is the warning of a new paper in the journal Science Advances, which concluded that ...

The latest data on respiratory illness in the United States shows that shoppers and merry-makers are spreading more than just holiday cheer: They’re also passing around germs. In many cases, it’s a ...

This is read by an automated voice. Please report any issues or inconsistencies here. WASHINGTON — Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected ...