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How common is Smallpox?

Smallpox

Smallpox became exinct in the wild in 1979, so there are now no incidents of Smallpox a year worldwide anymore.

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How common is Smallpox (an acute, highly contagious, often fatal infectious disease caused by an orthopoxvirus characterized by a biphasic febrile course and distinctive progressive skin eruptions)?

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Smallpox - Wikipedia, the free encyclopedia

There are two clinical forms of smallpox. Variola major is the severe and most common form, with a more extensive rash and higher fever. Variola minor is a less common presentation ...