Flu vaccination protection begins about two weeks after the shot and gradually declines over several months, which is why timing matters.
For most adults, late September through October is the sweet spot. Adults 65 and older, who see protection fade a little faster, benefit from waiting until at least late September.
Children who need two doses should start earlier so both doses are complete before the season peaks.
Walk-in vaccination is available at all Goodways clinics seven days a week, and no appointment is required.
This article is general health information and does not replace advice from your own care team. Talk with your provider about what applies to you.