12 янв 1796 г. - Smallpox/Germ Theory

Описание:

Edward Jenner notices milk maids don't get sick of smallpox and wonders why. Found Cows got sick with their own Pox. Jenner tests Cow-Pox on James Phillips and gives him a small dose. Phillips doesn't get Smallpox. This is known as Vaccination where you give a very small dose of the disease and introduce it into the immune system which then develop antibodies for it and was the first reported case of such thing.

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