Eradication of Smallpox (1 janv. 1967 – 1 juill. 1980)
Description:
A triumph by the WHO (World Health Organization) successfully eradicates smallpox using vaccination and modern epidemiology techniques.
Ajouté au bande de temps:
Date:
1 janv. 1967
1 juill. 1980
~ 13 years