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An arenavirus is a bi- or trisegmented ambisense RNA virus that is a member of the family Arenaviridae. [1] [2] These viruses infect rodents and occasionally humans.A class of novel, highly divergent arenaviruses, properly known as reptarenaviruses, have also been discovered which infect snakes to produce inclusion body disease, mostly in boa constrictors.
Canine distemper virus is closely related to measles virus and is the most important viral disease of dogs. The disease (which was first described in 1760, by Edward Jenner, the pioneer of smallpox vaccination, is highly contagious, but is well controlled by vaccination. In the 1990s, thousands of African lions died from the infection, which ...
The genome is not segmented and contains a single molecule of circular, negative-sense, single-stranded DNA.The complete genome is 3000–4000 nucleotides long. [1] They also contain a non-coding region with one to two 80–110 nt sequences that contain high GC content, forming a secondary structure of stems and loops. [2]
Influenza B virus is almost exclusively a human pathogen, and is less common than influenza A. The only other animal known to be susceptible to influenza B infection is the seal . [ 47 ] This type of influenza mutates at a rate 2–3 times lower than type A [ 48 ] and consequently is less genetically diverse, with only one influenza B serotype ...
Bunyavirales is an order of segmented negative-strand RNA viruses with mainly tripartite genomes. Member viruses infect arthropods, plants, protozoans, and vertebrates. [2] It is the only order in the class Ellioviricetes. [1]
Tissue tropism is the range of cells and tissues of a host that support growth of a particular pathogen, such as a virus, bacterium or parasite. [1] [2] Some bacteria and viruses have a broad tissue tropism and can infect many types of cells and tissues. [1] Other viruses may infect primarily a single tissue. [1]
Torque teno sus virus (TTSuV) is a non‐enveloped virus with a circular single‐stranded DNA genome of negative polarity ranging from 2.6 to 2.8 kb in size. [ 2 ] [ 1 ] The genome has three open reading frames, ORF1 ( capsid ), ORF2 and ORF3 and a highly conserved untranslated region. [ 2 ]
Nidovirales is an order of enveloped, positive-strand RNA viruses which infect vertebrates and invertebrates.Host organisms include mammals, birds, reptiles, amphibians, fish, arthropods, molluscs, and helminths. [1]