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Smallpox

3:09

What Is Smallpox?

2:56

History of vaccination: Smallpox vaccines

2:02

40th anniversary of smallpox eradication

3:18

‘Smallpox' Vials Found at Merck Lab in Suburban Philadelphia Facility

3:14

Forgotten smallpox vials under CDC examination

Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980. The risk of death following contracting the disease was about 30%, with higher rates among babies. Often those who survived had extensive scarring of their skin, and some were left blind.
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  • Classification 

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  • Mechanism 

  • Diagnosis 

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