City residents flock to the Albert S. Weyer Health Center in the city for free flu shots Thursday, Jan. 17, 2013. The York City Bureau of Health has opened clinics additional hours for free influenza vaccines. Free shots on a walk-in basis are available for city residents at Weyer Health Center, 435 W. Philadelphia St., Friday, Jan. 18 from 8:30 a.m to 11:30 a.m. Bill Kalina photo bkalina@yorkdispatch.com