Two-wave US flu season is now the longest in a decade

NEW YORK (AP) — The U.S. flu season is dragging on, and is now the longest in recent history.
Health officials on Friday said this flu season has been officially going for 21 weeks. That makes it the longest U.S. flu season in 10 years, and among the longest seen since the government started tracking flu season duration more than 20 years ago.
What’s made flu linger? An unusual second wave of flu hit just as a first wave was starting to fade. Some experts likened it two different flu