Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Colorado is in the midst of what could end up as the state’s worst flu season in at least 20 years.

Micrograph by Science Photo Library This flu season has also been "highly unpredictable," Nagata explains, with multiple waves of flu infections and both H1N1 and H3N2 strains circulating at the ...

A flu season that packed emergency rooms across Ventura County has brought 30 deaths so far, making it the county's second ...

It’s been a brutal influenza season throughout the United States. Flu rates are at their highest point in at least the last 15 years, making it likely that you ― or someone you know ― have ...

A second powerful wave of influenza has washed over many parts of the country this winter, including Washington, where flu patients are filling hospital ERs and deaths have already surpassed last ...

MARYLAND — Influenza rates are very high in Maryland as a second wave of seasonal flu is putting pressure on doctors’ offices and urgent care clinics nationwide, according to the latest data ...

Massachusetts residents are in the midst of what some public health officials are calling a “tsunami” of flu infections. Residents are reporting flu symptoms at higher rates than any winter ...

WINDBER, Pa. – A surge in flu-related hospitalization across western Pennsylvania – the highest statewide since 2010 – has some health centers reintroducing mask mandates. Others ...

A second powerful wave of influenza has washed over many parts of the country this winter, including Washington, where flu patients are filling hospital ERs and deaths have already surpassed last ...