9/19/2023 0 Comments Cid episode 1267Pasteur publicly claimed he had made the anthrax vaccine by serial passage and exposing the bacilli to oxygen. All the animals in the non-vaccinated group died, while all of the animals in the vaccinated group survived. Thirty days after the first injection, both groups were injected with a culture of live anthrax bacteria. The animals of one group were twice injected, with an interval of 15 days, with an anthrax vaccine prepared by Pasteur a control group was left unvaccinated. He prepared two groups of 25 sheep, one goat and several cows. Following his previous method of immunizing chickens against chicken cholera using cultures of the bacteria that had lost their virulence and become “attenuated” over many generations, Pasteur turned his attention to anthrax in 1881, using similar preparations of an artificially weakened organism to demonstrate his concept of vaccination. In the colorized engraving, as a laboratory assistant warms an attenuated anthrax vaccine candidate, another prepares individual doses to be administered in the now famous public experiment at Pouilly-le-Fort. Experiment with the Anthrax Vaccine, Pasteur Institute, engraving with later coloration, 19thc, (French, engraver unknown), Private Collection, Bridgeman Images, New York, NY.
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