The Great Smallpox problem Before injections, existed other methods, the earliest one was inoculation from the Latin in+oculus (in+eye), Czech and Slovak calque this word (očko, eye). …
Vaccine
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The Great Smallpox problem Before injections, existed other methods, the earliest one was inoculation from the Latin in+oculus (in+eye), Czech and Slovak calque this word (očko, eye). …