Killing a Killer: What Next for Smallpox?
Figure 1
Smallpox is a uniquely human disease.
This 1974 photo of a young villager in the Rangpur district of northeastern Bangladesh depicts one of the last known infections of a human with variola major virus. (Source: Jean Roy, Emory Global Health Institute, from the CDC Public Health Image Library at http://phil.cdc.gov/phil/home.asp.)