Edward Jenner, returning to London in 1811, …

Years: 1811 - 1811

Edward Jenner, returning to London in 1811, observes a significant number of cases of smallpox after vaccination, finding that in these cases the severity of the illness is notably diminished by previous vaccination.

He had become involved in 1803 with the Jennerian Institution, a London-based society concerned with promoting vaccination to eradicate smallpox.

In 1808, with government aid, this society became the National Vaccine Establishment.

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