7 ноя 1796 г. - Vaccination for smallpox was found

Описание:

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.

Добавлено на ленту времени:

Дата:

Изображения: