Innoculated an 8 year old boy with Cow Pox, he developed the disease, but did not die.
Few months later, innoculated same boy with Small Pox and he didn't develop the disease.
Called his new method "Vaccination" from the Latin word for cow - "Vacca".
Couldn't explain how his procedure worked and it was a dead-end.
Ws supported by the Royal Family, however and by 1802, 12,000 people were vaccinated.
In 1852, the Government made vaccination compulsory.
By 1979 Small Pox had been wiped out.
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