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5 sie 2022 · Smallpox is a serious and often deadly viral infection. It's contagious — meaning it spreads from person to person — and can cause permanent scarring. Sometimes, it causes disfigurement. Smallpox has affected humans for thousands of years but was wiped out worldwide by 1980 thanks to smallpox vaccines.
Smallpox is the only human disease that has been successfully eradicated. 1 It is an infectious disease caused by the variola virus, and was a major cause of mortality in the past, with historic records of outbreaks across the world.
Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family. It was one of the world's most devastating diseases known to humanity. The last known natural case was in Somalia in 1977.
Early symptoms of smallpox include high fever, fatigue and severe back pain, and less often, abdominal pain and vomiting. Two to 3 days later the virus produces a characteristic rash with bumps full of a clear liquid, which later fill with pus and finally develop a crust that dries and falls off.
There are two forms of the 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, causing less severe disease, typically discrete smallpox, with historical death rates of 1% or less. [32] .
28 cze 2016 · Smallpox is an ancient disease caused by the variola virus. Early symptoms include high fever and fatigue. The virus then produces a characteristic rash, particularly on the face, arms and legs.
Smallpox was a serious illness caused by the variola virus that killed hundreds of millions of people. Smallpox was eradicated worldwide by 1980.
