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Canine Adenovirus 1 (CAV-1) was first isolated by Carbasso in 1954<sup>1</sup> from a case of acute hepatitis in the dog. This virus found to be identical to the virus isolated in 1947 by Rubarth<sup>2</sup> from a dog showing acute liver lesions, and so CAV-1 was originally known as Infectious Canine Hepatitis (ICH) virus. Subsequently, CAV1 infection was shown to be common in young dogs worldwide, with 82% of British dogs displaying neutralising antibody titres by nine months of age<sup>3</sup>. It has also since been demonstrated that CAV1 has a role in diseases other than [[Infectious Canine Hepatitis]], such as [[Canine Infectious Tracheobronchitis]].
 
Canine Adenovirus 1 (CAV-1) was first isolated by Carbasso in 1954<sup>1</sup> from a case of acute hepatitis in the dog. This virus found to be identical to the virus isolated in 1947 by Rubarth<sup>2</sup> from a dog showing acute liver lesions, and so CAV-1 was originally known as Infectious Canine Hepatitis (ICH) virus. Subsequently, CAV1 infection was shown to be common in young dogs worldwide, with 82% of British dogs displaying neutralising antibody titres by nine months of age<sup>3</sup>. It has also since been demonstrated that CAV1 has a role in diseases other than [[Infectious Canine Hepatitis]], such as [[Canine Infectious Tracheobronchitis]].
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==Classification==
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CAV-1 is a Mastadenovirus, member of the [[Adenoviridae - Overview]] family.
 
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CAV-1 is a member of the [[Adenoviridae]] family, a group double-stranded DNA viruses with an  icosahedral nucleocapsid. Many Adenoviridae have been isolated from mammals and birds, but only a small number of these cause significant veterinary disease. The family consists of four genera: Mastadenovirus, Aviadenovirus, Atadenovirus and Siadenovirus. Canine adenovirus 1 is a Mastadenovirus.
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==Viral Characteristics==
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The genetic information of CAV-1, like other Adenoviridae, is conveyed by a single, linear molecule of double-stranded DNA which encodes around 30 proteins. Under the influence of both host and virus-encoded factors, the DNA replicates and is transcribed within the host nucleus, where virion assembly also occurs. Basophilic and/or acidophilic inclusions may therefore be seen in the nucleus of an adenovirus-infected cell.
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The virus genome is contained within a non-enveloped icosohedral nucleocapsid, which comprises capsomeres (called hexons) and twelve vertex capsomeres  (called pentons). A fibre antigen protrudes from each of the twelve pentons, and this attaches to host cell receptors as well as being a type-specific haemagglutinin.  This fibre antigen is a feature specific to the Adenoviridae. The hexon of mammalian adenoviruses contains a cross-reacting group antigen.
      
==Hosts==
 
==Hosts==
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