:an acute contagious febrile disease of humans that is caused by a poxvirus of the genusOrthopoxvirus(speciesVariola virus), is characterized by skin eruption with pustules, sloughing, and scar formation, and is believed to have been eradicated globally by widespread vaccination ...
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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 evolved from an African rodent poxvirus 10 millennia ago. Because of the absence of an animal ...
18 Although this virus presented with microscopic morphology similar to smallpox virus, other biologic characteristics were distinctive and resulted in the designation of a new species in the genus Orthopoxvirus, called MPXV.19 In 1970, the first human monkeypox infections were identified in persons...
VariolaVirusis a brick-shaped 200 nm member of Orthopoxvirus genus Cowpox is also a member of Orthopoxviruses V. Types Standard Smallpox (90% of cases) Variola major (much more severe, lethal form) Variola Minor Severe variants Hemorrhagic Smallpox (more common in pregnant women) ...
Monkeypox virus (confirmed to be an outbreak in May 2022), Vaccinia virus, and Cowpox virus are other orthopoxvirus species. Virus Classification Family Poxviridae Subfamily Chordopoxvirinae Genus Orthopoxvirus Species Variola Virus The term variola was first used for smallpox in 570 CE. It or...
an acute contagious febrile disease of humans that is caused by a poxvirus of the genus Orthopoxvirus (species Variola virus), is characterized by skin eruption with pustules, sloughing, and scar formation, and is believed to have been eradicated globally by widespread vaccination called alsovario...
variola, vaccinia, monkeypox, and cowpox viruses, all belonging to the genus Orthopoxvirus, infect humans. Most species in the genus Orthopoxvirus are strictly host specific; however, species such as cowpox and monkeypox viruses naturally infect a variety of mammals [3], [4]. Therefore, ...
Genus: Orthopoxvirus Species: †Variola virus Smallpox is caused by infection with variola virus, which belongs to the family Poxviridae, subfamily Chordopoxvirinae, genus Orthopoxvirus. Evolution The date of the appearance of smallpox is not settled. It most probably evolved from a terr...
Camelpox and taterapox viruses appear closer to VAR based on a comparison of short DNA sequences [41]. CPV may be nearest to the progenitor orthopoxvirus, as it contains all genes collectively present in the other members of this genus [17]. Download: Download full-size image Fig. 3. ...