1 jan 1796 ano - Vaccination
Descrição:
Vaccine was first introduced by Edward Jenner in 1796 and is still present today. The smallpox vaccine was the first successful vaccine to have developed. Vaccine is the administration of antigenic material to stimulate an individual's immune system! Vaccines can prevent infectious diseases.Adicionado na linha do tempo:
Data:
1 jan 1796 ano
Agora
~ 228 years ago
