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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 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.
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.
Smallpox was a serious illness caused by the variola virus. It caused a severe rash that often left disfiguring scars. About 1 in 3 people who got smallpox died.
Orthopoxvirus is a genus of viruses in the family Poxviridae and subfamily Chordopoxvirinae. Vertebrates, including mammals and humans, and arthropods serve as natural hosts. There are 12 species in this genus.
