25 states are now reporting widespread flu outbreaks, up from 10 just last week.
Two children also died this week from the flu, bringing the total number of flu-associated pediatric deaths to six.
This strain is hitting the young and middle-aged especially hard.
It's not too late to get a flu shot. Doctors say that is the best protection from the virus, reducing your risk up to 70 percent.
The flu first took off in the south, hitting Texas and Mississippi before Thanksgiving, and is now moving into the Southeast and the West.