14 h 12 m, 14 mayo 1796 año - Edward Jenner Presents the First Smallpox Vaccine

Descripción:

Englishman Edward Jenner took fluid from a cowpox blister and scratched it into the skin of James Phipps, an eight-year-old boy. A single blister rose up on the spot, but James soon recovered. On July 1, Jenner inoculated the boy again, this time with smallpox matter, and no disease developed. The vaccine was a success.