Four years ago, as attention locked onto COVID-19, another virus began circling the globe. A major outbreak of a new strain of bird flu—formally named influenza A virus subtype H5N1—has since killed ...

At the start of 2025, health officials in Louisiana reported the first U.S. bird flu death and experts questioned whether highly pathogenic avian influenza A (H5N1) could lead to the next pandemic. A ...

Researchers at WashU Medicine have developed a nasal vaccine against the highly pathogenic H5N1 avian influenza virus, or bird flu, which has jumped from wild birds to livestock to humans. When tested ...

The variant of bird flu that killed a Louisiana resident has now been found in dairy cows. Until now, the human cases of bird flu traced to cattle have been mild, mostly eye infections. But the U.S.

Post-2020, highly pathogenic avian influenza H5 circulation is characterised by spatially expanded ecological suitability, changes in key environmental predictors, and a wider range of avian species ...

Highly pathogenic avian influenza A(H5N1) viruses have been circulating among wild birds and are enzootic in poultry in some areas of the world with spillover to a wide range of terrestrial and marine ...

(NewsNation) — As the winter season fully kicks in, it’s expected that people across the country will get sick. Except this time, a new variant of the influenza virus has sounded the alarm — and ...

Proteins and genetic material from H5N1 influenza viruses have been found in pasteurized milk in the United States, but a study from St. Jude Children's Research Hospital shows those inactive viral ...