Smallpox inoculation (variolation) was widely reported in sub-Sahara Africa before, during, and after the colonial era. The infective smallpox materials and techniques used, as well as the anatomical ...

Throughout the course of human history, one infectious disease (Figure 1) may account for more deaths than any other, perhaps all others combined. Smallpox mortality falls between 20% and 50%. Until ...

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.

(Smith Collection/Gado/Getty Images; CDC/Image Point FR/BSIP/Universal Images Group via Getty Images) It all started with an unremarkable trip to grandma’s house in 1970. But two days into the visit, ...