Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in Michigan.

To fully understand the burden of influenza, multiple factors must be considered, including prevention efforts, the ...

Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in New Jersey, ...

The CDC estimated there have been at least 7.5 million illnesses in the U.S., 81,000 hospitalizations and 3,100 deaths from ...

Much of the concern this flu season is coming from the spread of subclade K, a subtype of influenza A. Similar subtypes have ...

H3N2 is a subtype of influenza A, one of the main categories of seasonal flu viruses that circulate globally each year.

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

Flu cases in Boston and across Massachusetts are continuing to tick up as a new variant circulates, with public health ...

Flu activity could continue to increase in the U.S. over the next few weeks, according to a top flu epidemiologist at the ...

Flu activity is surging and expected to continue. Meanwhile, the Florida Health Department hasn't released a weekly report in ...

The United States is at its highest level for the illness since the 1997-1998 season, according to data from the Centers for ...

Northern Nevada Public Health will offer free flu and COVID-19 vaccinations Wednesday, Jan. 7 following a sharp increase in ...