Smallpox (1 gen 1700 anni – 23 gen 1900 anni)
Descrizione:
Smallpox was discovered in the 18th century and throughout 19th century. The smallpox viruses are not alive and it requires a host cell to replicate, divide, and grow. Edward Jenner discovered in 1798 that vaccination could prevent smallpox. Smallpox is spread between people and its last occurrence was in 1977 when it got eradicated.Aggiunto al nastro di tempo:
Data:
1 gen 1700 anni
23 gen 1900 anni
~ 200 years
