Anthrax is caused by spore forming bacterium. It mostly affects animals. Humans can be infected if come in contact with infected animals. It was most common with sheep and cattle. In 1881, Louis Pasteur focused his attention on anthrax. Louis Pasteur performed public experiments in which he injected one group of animals with an anthrax vaccine he developed (9). Pasteur gave 25 shots of anthrax vaccine he had created with a weakened anthrax bacteria (8). Pasteur gave both rounds of the vaccine to the animals (8). Pasteur injected them with live anthrax bacteria (8). Pasteur also injected live anthrax bacteria into 25 other animals that have not been vaccinated (8). The vaccinated animals survive, while the 25 other animals that were not vaccinated
