7 nov 1796 - Vaccination for smallpox was found
Description:
Edward Jenner found the vaccination for smallpox when he discovered that people who ad contracted the cowpox disease never smallpox. He then took pus from a lady who cowpox injected into a child. It made him sick but he recovered.The child was injected with smallpox disease and he never got sick. That is how the vaccination against smallpox was discovered.
Ajouté au bande de temps:
Date:
7 nov 1796
Maintenaint
~ Il y a 229 ans