How Edward Jenner came up with the vaccination of smallpox.
People in the 1700's were dying of smallpox.
Edward Jenner noticed that milkmaids were mostly infected with cowpox. These same milk maids would also never get smallpox.
Jenner came up with a theory that if you got cowpox you could no longer get smallpox.
He tested this theory with a country boy named James Phipps who had never had cowpox or smallpox. He then infected the boy with cow pox and left him to recover.
Jenner then tried to infect the boy with smallpox from a smallpox victim. However this did not work and the boy did not get smallpox. He called this the vaccination after vacca meaning cow.
Jenner then shared his theory with the country that cowpox could be prevent smallpox. Many took his idea and got them selves vaccinated but many did not.
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