1 janv. 1775 - Smallpox
Description:
The first cases of smallpox were recorded, which eventually caused over 100,000 deaths. This event was important as it led to the development of the smallpox vaccine in 1799, protecting and saving many people.Ajouté au bande de temps:
Date:
1 janv. 1775
Maintenaint
~ Il y a 250 ans