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Variola virus infects only humans in nature, although primates and other animals have been infected in an experimental setting. Vaccinia, cowpox, and monkeypox viruses can infect both humans and other animals in nature.
Smallpox is an acute, contagious disease caused by the variola virus, a member of the genus Orthopoxvirus, in the Poxviridae family (see the image below). Virologists have speculated that it...
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.
Following the eradication of the human-specific variola virus (smallpox), all human Orthopoxvirus infections are zoonoses. [7] Mpox occurs naturally only in Africa, particularly in the Democratic Republic of the Congo . [ 8 ]
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.
Variola virus (VARV) is the causative agent of smallpox, which is a highly transmissible disease unique to humans. Survivors present with characteristic scarred skin following the healing of pocks that form during the latter stages of the disease. The mortality rate of smallpox approaches 30%.
