The method prevented smallpox and laid the foundation for vaccine ... As you know that was famously invented by someone from ...

The worst plague in history was the Black Death, which may have killed ... They caused empires to fall and new ones to arise. Smallpox first emerged around 68,000 years ago. We have no idea ...

DEAR DR. ROACH: With the resurgence of measles because of declining vaccination rates, should we be wary of the same happening with smallpox (which was also thought to have been eradicated)?

The smallpox came in the mail, in a little piece of 350-year-old human skin. And the surprise discovery is dramatically rewriting the history of one of the most notorious diseases to plague humankind.