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Bookmark or Share- Smallpox | Definition, History, Vaccine, & Facts | BritannicaSmallpox is an infectious disease that begins with fever and headache and proceeds to an eruption of the skin that leaves pockmarks. For centuries smallpox was one of the world’s most-dreaded diseases. But it was also one of the first diseases to be controlled by a vaccine, which led to its eradication in 1980.
- History of Smallpox | Smallpox | CDCOrigin of Smallpox. The origin of smallpox is unknown. The finding of smallpox-like rashes on Egyptian mummies suggests that smallpox has existed for at least 3,000 years. The earliest written description of a disease like smallpox appeared in China in the 4 th century CE (Common Era).
- Smallpox - World Health Organization (WHO)Smallpox. 28 June 2016 | Q&A. What is smallpox? Does it occur naturally? How can I catch it and is it contagious? How fast does smallpox spread? Weren't the remaining stocks of the smallpox virus destroyed after smallpox was eradicated? Then why is smallpox being talked about now? Can it be treated?
- Smallpox - WikipediaSmallpox is caused by infection with variola virus, which belongs to the family Poxviridae, subfamily Chordopoxvirinae, genus Orthopoxvirus. Evolution. The date of the appearance of smallpox is not settled. It most probably evolved from a terrestrial African rodent virus between 68,000 and 16,000 years ago.
- What is Smallpox? | Smallpox | CDCWhat is Smallpox? | Smallpox | CDC. Before smallpox was eradicated, it was a serious infectious disease caused by the variola virus. It was contagious—meaning, it spread from one person to another. People who had smallpox had a fever and a distinctive, progressive skin rash.
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