Currently, influenza A is dominant, according to data from the Centers for Disease Control and Prevention. “You tend to have one or the other virus predominant at any given time,” said Anice ...

But the coronavirus causes COVID, while the influenza virus causes the flu. COVID also spreads faster than the flu and remains contagious for longer periods. Both illnesses cause symptoms such ...

Influenza A is divided into subtypes based on two proteins on the virus's surface: hemagglutinin and neuraminidase. These lead to different combinations—with H1N1 and H3N2 presently the most ...

But they may want to give you a quick test to be sure the influenza virus is to blame, and not another health problem. When your doctor finds the flu virus, they can give you antiviral drugs early on.

More information: Hsiang-Chi Huang et al, Nuclear AGO2 supports influenza A virus replication through type-I interferon regulation, Nucleic Acids Research (2025). DOI: 10.1093/nar/gkaf268 Provided ...

This year’s surge in infections and hospitalizations appears larger than in the past, suggesting that this strain of influenza virus is “more contagious” and “more severe” than in past ...

Highly pathogenic avian influenza A(H5N1) virus, also known as H5N1 bird flu, is a viral infection that has seen a large spike in infections across the U.S., in wild birds, poultry, cattle and humans.

occasionally creating mutations that can make the virus more adept at spreading. “RNA viruses like influenza have these enzymes that basically can’t spell-check themselves, so they make a lot ...

Here's what we know about the flu this season: Influenza A — or flu A — are the influenza virus types responsible for most human illness and the flu season, according to the CDC. Current ...