A new form of the flu, which is highly contagious and aggressive, is sweeping the nation this season. A mutation of influenza ...

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

Flu seems to be sweeping the CSRA, with local residents calling in sick left and right as they report severe symptoms, even ...

As flu season picks up in the United States, health experts are concerned about a mutated flu strain that may be immune to this year’s influenza vaccine. A highly ...

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

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...

Following a national trend, 52 counties in Florida saw increasing cases of influenza A driven by a new mutation called ...

Changes in the key antigenic regions of H3N2 viruses suggest that the upcoming flu season may require closer attention to ...

A new influenza A(H3N2) virus strain renamed “H3N2 subclade K,” which is circulating widely today, was identified by health organizations months after the seasonal influenza vaccine was developed. The ...

A new influenza virus mutation is spreading across the United States, increasingly infecting Americans. It is a strain of influenza A called "H3N2 subclade K," according to the Centers for Disease ...