1 ene 1796 año - Vaccination
Descripción:
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.Añadido al timeline:
fecha:
1 ene 1796 año
Ahora mismo
~ 228 years ago
