The Health Protection Agency, the official body overseeing public health in England, sent a letter to 600 Neurologists warning that the swine flu vaccine could potentially cause an increase in Guillain-Barre' Syndrome, a neurologic disease described in a previous post.   An increased risk of GBS was found in the 1976 Swine Flu Vaccine, which caused the U.S. government to withdraw the vaccine weeks after a vaccination effort had been started.   The U.S. Centers for Disease Control and Prevention, on the other hand, has been understating this risk, advising that the new, fast-tracked swine flu vaccine is safe for the general public, including children.  Read more here.