Last case of variola major smallpox (02:12) 08 Apr 10
The College of Physicians of Philadelphia
D.A. Henderson discusses the last wild case of variola major

Last case of variola minor smallpox (02:56) 08 Apr 10
The College of Physicians of Philadelphia
D.A. Henderson discusses the last case of naturally occurring variola minor, a less severe form of smallpox, which occurred in Somalia in 1976

Around The Services (1:11) 30 Jan 09
Smallpox Study