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Edward Jenner develops the process of vaccination for smallpox, the first vaccine for any disease
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Crawford W. Long uses ether as a general anesthetic
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Dr. Horace Wells uses nitrous oxide as an anesthetic
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Ignaz Semmelweis discovers how to the prevent the transmission of puerperal fever
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Louis Pasteur identifies germs as cause of disease
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First vaccine developed for cholera
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First vaccine developed for anthrax by Louis Pasteur
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First vaccine for developed for rabies by Louis Pasteur, and Koch discovers the TB bacillus
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Emil von Behring discovers antioxins and develops tetanus and diphtheria vaccines
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First vaccine developed for typhoid fever
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First vaccine developed for Bubonic plague
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Felix Hoffman develops aspirin