30
/fr/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
June 15, 2024
532887
148836
2

Death rate of Smallpox in Boston (31 janv. 1702 – 31 déc. 1920)

Description:

boston got its first smallpox vaccine in 1800. After 1800 the death rate significantly decreased.

Ajouté au bande de temps:

7 déc. 2018
0
0
448

Date:

31 janv. 1702
31 déc. 1920
~ 219 years