Canine circovirus

Species of virus

Canine circovirus, first isolated in 2012, is a small non-enveloped, icosahedral, single-stranded DNA virus that infects domestic dogs and wild canids exclusively. It is a member of the Circoviridae family and the genus Circovirus. There are currently 11 species of known circoviruses that have been identified to affect a wide variety of birds and mammals. As seen with all extensively studied circoviruses, the diameter ranges between approximately 15 and 25 nanometers. The icosahedral triangulation number is 1, the smallest size a viral capsid can be, in which there are a total of 60 protein subunits that make up the capsid. CaCV is not to be confused with canine coronavirus, another diarrhea-causing agent within the family Coronaviridae, or porcine circoviruses which are a members of the same genus as CaCV but only seen in pigs. CaCV was the first Circovirus to be identified that infects a mammal species other than pigs.

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