The vaccine used to protect humans against the anthrax disease, called Anthrax Vaccine Adsorbed (AVA), was licensed in 1970. It was initially used to protect people who might be exposed to anthrax where they worked, such as veterinarians and textile plant workers who process animal hair. When the U. S. military began to administer the vaccine, then extended a plan for the mandatory vaccination of all U. S. service members, some raised concerns about...