May 6, 2009 5:54 pm Scientists Examine if New Flu Shot is Needed In the wake of the Swine Flu, scientists and the federal government are looking to update their flu vaccinations. US & World Videos 3:24 Bay Area Proud's Blood Drive takes place in San Jose 1:28 San Francisco clergy abuse survivors testify 2:01 Walnut Creek to honor gold medalist Amit Elor 2:16 San Francisco police shoot man reported with gun outside Powell Street BART station 2:53 Trump's Bay Area visit bothers some community members