This year's flu season is hitting younger and middle-aged adults unusually hard.
That from a new report by the Centers for Disease Control.
Three out of five people hospitalized with influenza this year have been between the ages of 18 and 64.
That's up from 35 percent in previous years.
More than half of flu deaths this season have occurred among people ages 25 to 64.
Health officials continue to encourage everyone who is at least six-months old to get vaccinated.