Vaccine A

"The worst friendly-fire incident in military history was not caused by a bomber pilot's navigational error or a poorly targeted artillery bombardment. It came from something no soldier had any reason to think would harm him: a vaccine administered by the military's own medics. When troops went to the Middle East to fight the Gulf War in 1991 and the Iraq War in 2003, they were immunized with the only FDA-approved anthrax vaccine in existence - or at least they were supposed to be. A number of them, perhaps thousands, received an experimental vaccine instead. Without their knowledge or…