Flu, colds and other ailments follow many home from the holidays.
Many Americans brought an unexpected visitor home after their holiday vacation.
"We traveled all over the country for the holidays, we exchanged gifts and viruses and we brought them home, now we're all coughing and sneezing," says Dr. William Schaffner.
Doctors typically report an increase in office visits during the last weeks of December and the beginning of January, an effect of family germ sharing and the flu.
The Centers for Disease Control is reporting an increase in flu activity in every state, something that's expected to continue and peak in the month of February.
If you're one of the lucky few who has snuffed the sniffles so far this year, experts say frequent hand washing and staying away from sick friends and family could keep you flu free.
"Vaccine is out there in abundance," Dr. Schaffner says. "It's not too late to get vaccinated, you can still get yourself protected."
You'll need that protection until the sun comes back this spring.
Experts say so far flu activity this season is normal and the vaccine appears to be on target.