San Francisco Holds H1N1 Flu Clinic, Distributing Thousands Of Vaccines
SAN FRANCISCO - DECEMBER 22: A woman receives an H1N1 flu vaccination during a clinic at the Bill Graham Civic Auditorium December 22, 2009 in San Francisco, California. The city had 16,000 doses of the vaccine on hand for residents of the city. (Photo by Justin Sullivan/Getty Images)