The H5N1 avian influenza virus has infected birds and mammals around the world. As of June 2025, 70 people have been infected ...

The adjusted incidence of transmission of influenza virus by day 5 that resulted in symptoms was 5.8% with baloxavir and 7.6% with placebo, but this difference was not significant (adjusted OR 0. ...

For a long time, scientists depended on luck to find new proteins. In 1840, for example, Friedrich Ludwig Hünefeld, a German ...

Colorized transmission electron micrograph of influenza A/H1N1 virus particles. The U.S. Department of Health and Human Services (HHS) and the National Institutes for Health (NIH) today announced ...

The influenza virus manipulates the body's gene regulation system to accelerate its own spread. A new study also shows that an already approved drug could help strengthen immune defenses -- though ...

Colorized transmission electron micrograph of influenza A/H1N1 virus particles (blue). Influenza A/H1N1 can infect both humans and animals, including birds and pigs, and is one of several strains ...

Based on the data presented, the committee agreed that there was a need to change the influenza A/H3N2 virus strains from the 2024-2025 formula. The FDA has informed vaccine manufacturers of these ...

Colored scanning electron micrograph (SEM) of H1N1 influenza (flu) virus particles (pink) budding from lung cells. H1N1 is a subtype of the influenza A virus, ...

Two types of influenza viruses are responsible for seasonal flu outbreaks: Influenza A and B. Influenza A accounts for around 75 percent of all cases and tends to cause more severe illness in adults.

As the Centers for Disease Control and Prevention (CDC) explains, bird flu is a disease caused by the influenza A virus. At the same time, recent CDC data shows that seasonal influenza A is rising ...

Photo of a wild bird. To the right is a colorized transmission electron micrograph of H5N1 virus particles (purple). H5N1 bird flu is widespread in wild birds worldwide, and in 2024 is causing a ...

The ongoing spread of bird flu in the United States has alarmed experts — not just because of human cases causing severe illness, but also due to troubling new instances of infections in cats.