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Double-stranded RNA viruses (dsRNA viruses) are a polyphyletic group of viruses that have double-stranded genomes made of ribonucleic acid.The double-stranded genome is used as a template by the viral RNA-dependent RNA polymerase (RdRp) to transcribe a positive-strand RNA functioning as messenger RNA (mRNA) for the host cell's ribosomes, which translate it into viral proteins.
Double-stranded RNA (dsRNA) is RNA with two complementary strands found in cells. It is similar to DNA but with the replacement of thymine by uracil and the adding of one oxygen atom. [ 1 ] Despite the structural similarities, much less is known about dsRNA.
African swine fever virus (ASFV) is a large double-stranded DNA virus which replicates in the cytoplasm of infected cells and is the only member of the Asfarviridae family. The virus causes a lethal haemorraghic disease in domestic pigs. Some strains can cause death of animals within as little as a week after infection.
The genome can be single-stranded RNA or double-stranded . [2] Notable human diseases caused by RNA viruses include influenza , SARS , MERS , COVID-19 , Dengue virus , hepatitis C , hepatitis E , West Nile fever , Ebola virus disease , rabies , polio , mumps , and measles .
Viruses that replicate via RdRp belong to three groups in the Baltimore classification system, all of which are in the kingdom Orthornavirae: single-stranded RNA (ssRNA) viruses, which are either positive (+) or negative (-) sense, and double-stranded RNA viruses (dsRNA). +ssRNA viruses have genomes that can functionally act as mRNA, and a ...
Sedoreoviridae (formerly Reoviridae) is a family of double-stranded RNA viruses. Member viruses have a wide host range, including vertebrates , invertebrates , plants, protists and fungi. [ 1 ] They lack lipid envelopes and package their segmented genome within multi-layered capsids .
A Chinese study says that tracking the H3N2 canine influenza virus for 10 years has shown adaptions that allow the dog flu to recognize a human-like receptor.
Giardiasis* is an intestinal infection in dogs caused by the protozoa Giardia lamblia. The most common symptom is diarrhea. The zoonotic potential of giardiasis is controversial. [25] [26] Coccidiosis can be caused by a variety of coccidian organisms in dogs, most commonly Isospora. There are usually no symptoms, but diarrhea and weight loss ...