By afternoon, Valley Health Center Moorpark in San Jose had already given out all of its 14,000 doses and was closed.
People started lining up at8:00 a.m. two and a half hours before the clinic even opened.
"It's hard to turn people away," clinic manager Dena Dickinson told ABC. "There are many people who meet the criteria, but we're staying pretty strict to what the criteria is to get the vaccine."
Free swine flu clinics have drawn thousands of people across the Bay Area in the past couple of weeks. People who meet the criteria include health care workers, pregnant women, people who live with or care for infants, people between the age of six months and 24-years-old, and adults with a chronic medical condition.