Stop the Flu: Protect Yourself and Those Around You One-stop for the entire family. We have preservative-free, quadrivalent, and high dose vaccines available. Insurance will be billed. Glenwood Medical Center Walk-In Flu Vaccine Clinics: Tuesday, October 8, 8:30a – 4p Monday, October 14, 8:30a – 6p (Family Night) Tuesday, October 15, 8:30a – 4p