Pediatric Flu Shot Clinic – Thursday, September 17, 3-6 p.m. Seward Family Medical Center Lobby. The Centers for Disease Control and Prevention recommends children ages six months and older receive an annual flu vaccination. Flu vaccinations can reduce flu illnesses, doctor’s visits, missed school due to the flu and prevent flu-related hospitalizations. It takes about two weeks after vaccination for antibodies to develop int eh body that protect against flu. Protect yourself, protect your family and don’t delay getting everyone their flu vaccination.