A Vaccine Gone Wrong

In two trials of an experimental AIDS vaccine, more cases of HIV infection were found among volunteers receiving the vaccine than among those receiving a placebo. On closer examination, most of the people who became infected had been previously exposed to a cold virus that, in modified form, was used as a vehicle for the vaccin


Discussion Policy
Comments that include profanity or personal attacks or other inappropriate comments or material will be removed from the site. Additionally, entries that are unsigned or contain "signatures" by someone other than the actual author will be removed. Finally, we will take steps to block users who violate any of our posting standards, terms of use or privacy policies or any other policies governing this site. Please review the full rules governing commentaries and discussions. You are fully responsible for the content that you post.
© 2008 Washingtonpost.Newsweek Interactive