Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus. One of the first ...

In the spring of 2023, we returned to Península Valdés, a rugged coastal region in Argentine Patagonia, expecting to witness the familiar sights and ...

U.S. flu infections are showing signs of a slight decline, but health officials say it’s not clear that this severe flu ...

The Nebraska Department of Agriculture confirmed a number of bird flu cases in the state in the past two months, including one in a commercial flock in Butler County in December. Since November, cases ...

Doctors and scientists say this year's influenza season could be tougher than usual. A new version of the flu virus, called H3N2, is spreading quickly. At the same time, fewer people are getting flu ...

The number of influenza cases is surging across the United States, putting significant strain on many hospitals. We asked the experts to explain what makes this year's flu season so unusual. Colored ...

Seasonal flu activity is up across the United States, according to data from the Centers for Disease Control and Prevention.There was a 7.1% increase in positive influenza tests as of the week ending ...

Ignacio López-Goñi does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

The subclade K flu strain is a variant of the H3N2 virus. A new influenza strain this flu season is raising concerns as Americans hit the roads and take to the skies ahead of the Thanksgiving holiday, ...