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/
Bringing Smallpox Vaccination to the New World...
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