The death toll and economic damage associated with flu highlight its role as one of the most harmful viruses in history.

As flu cases rise across the U.S., those who end up contracting the virus have treatments available that may help reduce ...

A 2022 study estimates that at-home flu tests have a sensitivity of about 61% if the test is performed within 72 hours of ...

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

The “super flu” behind outbreaks in the US and UK is a new variant of influenza A H3N2, subclade K. Existing vaccines appear ...

On the surface of the influenza virus are two molecular "keys": hemagglutinin (HA) and neuraminidase (NA). They are the virus's lockpicks, the tools that let it slip into our cells and spread from one ...

Onset, intensity, severity and duration of influenza seasons vary each year and are driven by factors such as temperature, rainfall, humidity, circulating virus types/subtypes, population immunity ...

This year’s influenza virus has been dubbed the “super flu” for how quickly it’s spreading — and how hard it’s hitting.

(NEXSTAR) – Cases of the flu continue to mount, with health officials recently recording the first pediatric flu-related deaths of the season, but some states are seeing much higher activity than ...

A new flu strain that has been dominating cold and flu season overseas is on the rise in the United States. The mutated strain, known as subclade K, originates from the most common flu-causing virus, ...

(NEXSTAR) – The U.S. is seeing a post-Thanksgiving spike in influenza, data released by the Centers for Disease Control and Prevention on Friday shows. The country saw an 8% increase in people testing ...