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4 magg 1796 anni - First Vaccinations

Descrizione:

Edward Jenner's first vaccination. After successfully using cowpox to help vaccinate against smallpox in humans, the experiment was immediately followed by public criticism for many different reasons ("History of Anti-vaccination Movements")

Aggiunto al nastro di tempo:

History of Anti-Vaxxers

Byo
9 dic 2019
0
0
315

Data:

4 magg 1796 anni
Adesso
~ 229 years ago
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