Sebelius:"Vaccinations main swine flu defense"

Health and Human Services Secretary Kathleen Sebelius said Tuesday that a massive school closing wouldn't stop the spread of the swine flu virus, saying vaccinations must be the defense against a menace that one report said could infect up to half of the population."What we know is that we have the virus right now traveling around the United States," Sebelius said in a nationally broadcast interview."And having children in a learning situation is beneficial...What we learned last spring is that shutting a school down sort of pre-emptively doesn't stop the virus from spreading"....