DENVER -- Doctor's say this is the time of year when children start to get the sniffles and coughs, but it isn't too late to protect your children from the flu.

Doctors say school aged children are particularly at risk of getting the flu.

The Med-Express Urgent Care is offering free flu shots to any child age 4 to 18 through Jan. 15.

"It's a walk in basis, and we are very good at getting our patients in and out. The flu vaccine probability takes 10 minutes from the time they step in and until they are walking out," Medical Director Mark Montano said.

Med-express Urgent Care is open from 8 a.m. to 8 p.m. with no appointment needed.

They have locations in Cherry Creek, Highlands Ranch, Lakewood, Northglenn, Parker and south Aurora.