A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

It is not yet clear whether the new H3N2 Flu A subclade K subvariant will reduce the efficacy of the flu vaccine this season.

The Maryland Department of Agriculture announced Dec. 20, a presumptive positive case of H5 avian influenza in a commercial ...

State officials confirm a second bird flu case on a Queen Anne’s County farm. Risk to people remains low and poultry is safe ...

At least 14 states and Washington, DC, are seeing high and very high levels of flu, mainly caused by a surprise new influenza ...

A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.

This flu season has been relatively mild so far but medical experts expect it to intensify in the coming weeks due to a new strain that emerged after the current vaccine’s production — though that ...

Preliminary testing has confirmed a positive case of H5 avian influenza in a commercial broiler farm in Queen Anne's County, ...

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 ...

(NEXSTAR) – As we get deeper into flu season, a new type of the influenza virus has been identified, the Centers for Disease Control and Prevention confirms. The new strain is a variation of influenza ...

Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...