The Polk County Health Department will hold nearly 50 community flu vaccination clinics beginning Wednesday and scheduled through November. Click here for a complete schedule. The annual "drive-thru flu clinic" will be held on Saturday, Oct. 5, at the Polk County Health Department, 1907 Carpenter Ave. Vaccinations are also available on a walk-in basis at the health department Monday through Friday from 9 a.m. to 4:30 p.m. and Tuesdays until 6:30 p.m. To speed up the process at the flu clinics, people can download the consent form from the Health Department website and bring it with them.