The Dangers of a Vaccine Trial

William Halford developed a vaccine to treat herpes in St. Kitts, but it didn't work for all patients. David Perry: The brutal efficiency of modern medicine leaves people craving connection. He says when you're having beers and chumming around with the scientists running an experiment, they are more likely to want to please him. Perry: Without a control group, Halford had no way of knowing whether the vaccine was actually doing something or if the mere care from a sympathetic soul, from a friend, was the real benefit.