Edward Jenner’s Discovery Of The Smallpox Vaccine

medical

Smallpox ranks among the world’s most terrible diseases. Over the centuries, it has killed or scarred hundreds of millions of people. It seems to have originated in the tropical zones of sub-Saharan Africa or India, and spread along trade routes to China and Europe. Virologists suspect that the disease was a mutation of a pox-like virus that afflicted domesticated animals.

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