21 янв 1799 г. - Edward Jenner's smallpox vaccination is introduced
Описание:
Edward Jenner introduces the worlds first small pox vaccination. This vaccination was meant ot help fight small pox and erradicate the diseaseДобавлено на ленту времени:
Дата:
21 янв 1799 г.
Сейчас
~ 225 г назад
