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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus.
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. Its historic death tolls were so large that it is often likened to the bubonic plague.
There are four main clinical forms of smallpox, each with different characteristics. During the smallpox era, the case-fatality rate differed for the different clinical forms, but it was approximately 30% overall in unvaccinated individuals.
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. It was declared eradicated in 1980 following a global immunization campaign led by the World Health Organization.
7 cze 2016 · A person with smallpox goes through several stages as the disease progresses. Each stage has its own signs and symptoms. Incubation Period. Initial Symptoms. Early Rash. Pustular Rash and Scabs. Scabs Fall Off. No Scabs. Last Reviewed: June 7, 2016.
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.
