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

Weekly numbers show that 2% of U.S. deaths for week 5 were due to the flu. COVID was responsible for 1.5% of deaths in the ...

Flu activity decreased for the third consecutive week in the U.S., according to data from the Centers for Disease Control and Prevention's weekly influenza reports. Though flu activity has gone down, ...