Kyle Harper is the G.T. and Libby Blankenship chair in the History of Liberty at the University of Oklahoma and author of Plagues upon the Earth: Disease and the Course of Human History. President ...

It all started with an unremarkable trip to grandma’s house in 1970. But two days into the visit, something went terribly wrong. The 9-month-old grandson fell ill. First, a fever. Then, a nasty rash.

Vials labeled "smallpox" were found in a freezer at a lab in Pennsylvania, not long after Bill Gates cited a smallpox attack in an interview. There is no evidence of a connection between the two ...

The dreaded smallpox virus was eradicated more than 40 years ago, but the threat of its return still looms. In an effort to develop a safer vaccine substitute, Canadian researchers have resurrected a ...