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22 ottob 1820 anni - Early Experiments in Transmission

Descrizione:

Med students Stubbins ffirth test person to person transmission
took fresh black vomit from yellow fever and smeared it, drank it

Aggiunto al nastro di tempo:

new disease

ByTassya
14 dic 2018

Data:

22 ottob 1820 anni
Adesso
~ 203 years ago
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