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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] 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, [10] making smallpox the only human disease to have been eradicated to date.
Diseases associated with this genus include smallpox, cowpox, horsepox, camelpox, and mpox. [ 1 ] [ 2 ] The most widely known member of the genus is Variola virus , which causes smallpox. It was eradicated globally by 1977, through the use of Vaccinia virus as a vaccine .
If the file has been modified from its original state, some details may not fully reflect the modified file. Short title V0031469 Gloucester smallpox epidemic, 1896
The Massachusetts smallpox epidemic or colonial epidemic was a smallpox outbreak that hit Massachusetts in 1633. [1] Smallpox outbreaks were not confined to 1633 however, and occurred nearly every ten years. [2] Smallpox was caused by two different types of variola viruses: variola major and variola minor. [3]
The FBI and the Center for Disease Control and Prevention are investigating “questionable vials” labeled "smallpox" and found in a freezer last night at a Merck facility outside Philadelphia.
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The Centers for Disease Control reports that there have been more than 22,400 cases across 79 countries around the world. Almost 99% of monkeypox cases from the current outbreak have been reported ...