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Smallpox was an infectious disease caused by variola virus (often called smallpox virus), which belongs to the genus Orthopoxvirus. [7] [11] The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, [10] making smallpox the only human disease to have been eradicated to date.
The history of smallpox extends into pre-history. [1] Genetic evidence suggests that the smallpox virus emerged 3,000 to 4,000 years ago. [2] Prior to that, similar ancestral viruses circulated, but possibly only in other mammals, and possibly with different symptoms.
The smallpox vaccine is used to prevent smallpox infection caused by the variola virus. [10] It is the first vaccine to have been developed against a contagious disease. In 1796, British physician Edward Jenner demonstrated that an infection with the relatively mild cowpox virus conferred immunity against the deadly smallpox virus.
The words come from various (spotted) or varus (pimple). In England, this disease was first known as the "pox" or the "red plague". Smallpox settles itself in small blood vessels of the skin and in the mouth and throat. The symptoms of smallpox are rash on the skin and blisters filled with raised liquid. [citation needed]
This committee was an action taken towards eradicating smallpox in Mexico through campaigning through systematic and routine work regarding the vaccine. They mainly pursued smaller and rural communities that had been harder or had less resources to combat the disease. [23] Smallpox was officially declared eradicated from Mexico in 1951.
1796 – First demonstration of smallpox vaccination (Edward Jenner) 1808–1813 – First experimental demonstration of the germ theory of disease by Agostino Bassi though he does not formally propose the theory until 1844; 1813 – Vautier reports spontaneous remission of cancer after gangrene infection (later to be known as Clostridium ...
The FDA approved a drug that could be used to treat smallpox, a disease that was officially eradicated in 1980 -- but that doesn't mean it's gone for good.
A 2 + 1 ⁄ 2-year-old boy admitted to Willard Parker Hospital for treatment of whooping cough just prior to Le Bar's death also came down with smallpox and was diagnosed on March 17. In addition, Carmen Acosta—Ishmael Acosta's wife—was admitted to Willard Parker Hospital on April 6 with a rash and fever, and was diagnosed with smallpox a ...