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The clearest description of smallpox from pre-modern times was given in the 9th century by the Persian physician, Muhammad ibn Zakariya ar-Razi, known in the West as "Rhazes", who was the first to differentiate smallpox from measles and chickenpox in his Kitab fi al-jadari wa-al-hasbah (The Book of Smallpox and Measles). [27]
The Massachusetts smallpox epidemic or colonial epidemic was a smallpox outbreak that hit Massachusetts in 1633. [1] Smallpox outbreaks were not confined to 1633 however, and occurred nearly every ten years. [2] Smallpox was caused by two different types of variola viruses: variola major and variola minor. [3]
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.
1721 Boston smallpox outbreak: 1721–1722 Massachusetts Bay Colony: Smallpox: 844 [99] 1730 Cádiz yellow fever epidemic 1730 Cádiz, Spain Yellow fever: 2,200 [100] 1732–1733 Thirteen Colonies influenza epidemic 1732–1733 Thirteen Colonies: Influenza: Unknown [101] 1733 New France smallpox epidemic 1733 New France, Canada Smallpox ...
The most common type of smallpox, ordinary, historically has devastated populations with a 30% death rate. The smallpox virus is transmittable through bodily fluids and materials contaminated with infected materials. Generally, face-to-face contact is required for an individual to contract smallpox as a result of an interaction with another human.
Onesimus (late 1600s–1700s [1]) was an African (likely Akan) man who was instrumental in the mitigation of smallpox in Boston, Massachusetts.. He introduced his enslaver, Puritan clergyman Cotton Mather, to the principle and procedure of the variolation method of inoculation, which prevented smallpox and laid the foundation for the development of vaccines.
Mexico's native population was one of the first to experience a smallpox epidemic, where many succumbed to the disease. In 1520, the first wave of smallpox killed 5–8 million people. From 1545 to 1576, up to 17 million people died from smallpox. This large amount of deaths in the second wave are thought to be the result of hemorrhagic fevers. [5]
Most estimates coalesce around a fatality rate of about 10% (7.5 million people) of the total population of the empire with death rates of up to 15% in the cities and the army. If the pandemic was indeed smallpox, the number who died would have probably been about 25% of those infected as the survival rate from smallpox is often around 75%. [30 ...