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The more common, infectious form of the disease was caused by the variola major virus strain, known for its significantly higher mortality rate compared to its counterpart, variola minor. Variola major had a fatality rate of around 30%, while variola minor’s mortality rate was about 1%.
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.
11 paź 2024 · Smallpox is caused by infection with variola major, a virus of the family Poxviridae. (A less-virulent form of smallpox, called alastrim, is caused by a closely related virus known as variola minor.) There are no natural animal carriers nor natural propagation of variola outside the human body.
28 lut 2022 · The variola virus caused smallpox. This virus is a member of the orthopoxvirus family, which also includes cowpox and monkeypox. Historians believe that the first written description of...
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.
5 sie 2022 · Causes. Smallpox is caused by the variola virus. The virus can spread: Directly from person to person. You can catch the smallpox virus by being around someone who has it. An infected person can spread the virus when they cough, sneeze or talk. Coming in contact with skin sores also can cause you to get smallpox. Indirectly from an infected person.
Smallpox is an infectious disease that is caused by the variola virus. It spreads from one person to another, either directly or indirectly. The variola virus infects only humans — other animals are unable to catch smallpox.
