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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus.
Aug 5, 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.
Jun 18, 2024 · Smallpox 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.
Smallpox is an acute contagious disease caused by the variola virus, a member of the orthopoxvirus family. It was one of the most devastating diseases known to humanity and caused millions of deaths before it was eradicated. It is believed to have existed for at least 3000 years.
Apr 7, 2023 · What is smallpox? Smallpox was a serious illness that killed hundreds of millions before its eradication. It caused a hard, blistering rash that often led to disfiguring scars. About 1 in 3 people who got smallpox died from it. Beginning in the 1960s, the World Health Organization (WHO) led efforts to stop the spread of smallpox worldwide.
Jun 7, 2016 · What is Smallpox? Print. 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.
Thousands of years ago, variola virus (smallpox virus) emerged and began causing illness and deaths in human populations, with smallpox outbreaks occurring from time to time. Thanks to the success of vaccination, the last natural outbreak of smallpox in the United States occurred in 1949.
