Concerns about the safety of the H1N1 vaccine continue to grow as the government rushes to bring the vaccine to market. The FDA usually requires rigorous testing of any new drug, but concerns about the H1N1 pandemic has sped the vaccine through the channels without the same clinical testing as other vaccines. Even health care workers are concerned, as they are the first ones to receive the swine flu vaccine and will, in effect, be human guinea pigs.