Swine Flu Vaccine Works With One Shot

"The swine flu vaccine appears to work for adults with just one shot and within 10 days, a major boost to the widespread immunization campaign that officials are planning to protect people against the first influenza pandemic in 41 years, researchers reported Thursday. Preliminary data from an Australian study found that a single standard dose could produce an immune response in more than 96 percent of recipients, and U.S. studies indicate that the protection occurs in eight to 10 days, scientists reported. The vaccine also appeared safe. The eagerly awaited findings mark the first results from a flurry of studies that scientists have been rushing to conduct to develop a swine flu vaccine.