Bringing Smallpox Vaccination to the New World...
Smallpox is considered to be a leading factor in t... ...Spanish colonies, he sent a ship on a vaccination expedition under the supervision of Francisco Javier Balmis in 1803. But how to make the "raw material"... ...g enough for a ship to sail around the world? The expedition...
https://www.neatorama.com/2017/09/19/Bring-Smallpox-Vaccination-to-the-New-World/
