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2 mar 1796 ano - Vaccine

Descrição:

Edward Jenner discovers that purposefully giving people cowpox, a harmless disease but similar to smallpox, makes them immune to smallpox. He called this new method "vaccination."
(from http://broughttolife.sciencemuseum.org.uk/broughttolife/people/edwardjenner)

Adicionado na linha do tempo:

Data:

2 mar 1796 ano
Agora
~ 229 years ago

Imagens: