NewsDesk @bactiman63 Smallpox is one of the most devastating diseases in the history of mankind. Believed to originate more than three millennia in India or Egypt, epidemics caused by smallpox have decimated...

Smallpox is one of the most devastating diseases in the history of mankind. Believed to originate more than three millennia in India or Egypt, epidemics caused by smallpox have decimated populations across...