NEW YORK (AP) — Some key things to know about the flu season:
THE SITUATION: The annual flu season hit about a month early this year, and illness is now widespread in 47 states. Many cases are caused by a flu strain that tends to make people sicker. But so far experts say it's too early to know whether this will end up being a bad season. Maybe not: There are signs the flu may have already peaked in a few states, though it's too early to tell for sure, health officials say.