Bird Flu Vaccine Trial Gives Disappointing Results

Yet another trial of an H5N1 bird flu vaccine in humans has ended in disappointment, with only high doses giving a good immune response. A new experimental bird flu (avian flu) vaccine protects 54% of people who get two shots at a very high dose (90 micrograms). This dose is twelve times higher than that needed for protection from normal human flu. (New England Journal of Medicine)

Back to news