October 3
Virus Appreciation Day
Virus Appreciation Day
Cowpox Virus Gave Small Pox Vaccine
Vaccination: Edward Jenner
Small Pox Vaccination: First Vaccine For A Disease
Cowpox Virus Gave The Small Pox Vaccine
WHO
1967: Small Pox Eradication Program
1980
WHO: Declared World Free Of Small Pox
History Of Vaccination
Corona Virus, 2019
Snapshot
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