I thought that there had been a case of small pox reported in the last couple of years?
www.bt.cdc.gov/agent/smallpox/overview/disease-facts.asp
The last case of smallpox in the United States was in 1949. The last naturally occurring case in the world was in Somalia in 1977.
The last naturally occurring case of smallpox (Variola minor) was diagnosed on 26 October 1977.