May 14, 1796★★★★★
Jenner's smallpox vaccination
Edward Jenner inoculates the boy James Phipps with cowpox material, pioneering vaccination against smallpox.
ScienceDisease· United Kingdom
Edward Jenner inoculates the boy James Phipps with cowpox material, pioneering vaccination against smallpox.
The physician John Snow links a London cholera outbreak to a public water pump, a founding moment of modern epidemiology.
The United Kingdom gives the first doses of the fully authorised Pfizer–BioNTech COVID-19 vaccine, beginning a global vaccination campaign.