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

In a striking real-world experiment, flu patients spent days indoors with healthy volunteers, but the virus never spread.

Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the ...

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 ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus. The Centers for Disease Control and Prevention ...

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 ...

Influenza A H3N2 subclade K has driven flu cases across the country, with 52 counties in Florida seeing increases over the past week. While the current flu vaccine might be a "mismatch," it still ...

Flu cases and hospitalizations increased in 38 Florida counties. The Panhandle and Central Florida saw the most increases. Last week, the U.S. reported the third highest cumulative rate (within that ...

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 ...

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 ...