Hudson Headwaters offers Flu Shot Clinics throughout the North Country. View our schedule below for walk-in dates and times at your local health center—no appointment necessary! Already have an upcoming appointment with Hudson Headwaters? Great! Just ask for a flu vaccination during your next visit. Interested in becoming a new patient? Setting up your initial appointment is as easy as a phone call to one of our conveniently located health centers. Check out our schedule below to find the location nearest you.