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jan 1, 1700 - Primeros pasos
Description:
Curanderos chinos utilizan las costras de la viruela para inmunizar intranasalmente o en contacto con la piel
Added to timeline:
Linea del Tiempo de la Vacunacion
By
Angel 098
16 Nov 2017
0
0
464
Date:
jan 1, 1700
Now
~ 326 years ago
Images:
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