Another victory of global science over a deadly #infection: W.#Haffkine (born in Russian Empire in 1860), a disciple of #Mechnikov, created vaccine against #cholera
. He self-tested it, took part in vaccination of >42k people. This vaccine has been used globally
up until now.pic.twitter.com/DWGdq83s1w
8:41 AM - 18 Mar 2020
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