Genetic analysis of Group A rotaviruses: evidence for interspecies transmission of rotavirus genes.
Abstract: Rotaviruses are the major cause of severe gastroenteritis in young children and animals. The rotavirus genome is composed of eleven segments of double-stranded RNA and can undergo genetic reassortment during mixed infections, leading to progeny viruses with novel or atypical phenotypes. There are numerous descriptions of rotavirus strains isolated from human and animals that share genetic and antigenic features of viruses from heterologous species. In many cases, genetic analysis by hybridization has clearly demonstrated the genetic relatedness of gene segments to those from viruses isolated from different species. Together with the observation that some virus strains appear to have been transmitted to a different species as a whole genome constellation, these data suggest that interspecies transmission occurs naturally, albeit at low frequencies. Although interspecies transmission has not been documented directly, there is an increasing number of reports of atypical rotaviruses that are apparently derived from transmission between: humans, cats and dogs; humans and cattle; humans and pigs; pigs and cattle; and pigs and horses. Interspecies evolutionary relationships are supported by phylogenetic analysis of rotavirus genes from different species. The emergence of novel strains derived from interspecies transmission has implications for the design and implementation of successful human rotavirus vaccine strategies.
Publication Date: 2002-04-04 PubMed ID: 11928984DOI: 10.1023/a:1014073618253Google Scholar: Lookup
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Summary
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This research article explores the genetic aspects of Group A rotaviruses, the leading cause of serious stomach illness in children and animals, and provides evidence for the transmission of rotavirus genes between different species.
Understanding Rotaviruses
- Rotaviruses are the primary cause of severe gastroenteritis, an inflammation of the stomach and intestines, in young children and animals.
- The genome of the rotavirus is made up of eleven segments of double-stranded RNA. When mixed infections occur, it can undergo a process called genetic reassortment, leading to new viruses with different or unusual characteristics.
Indications for Interspecies Transmission of Rotavirus Genes
- Various instances of rotavirus strains isolated from humans and animals show shared genetic and antigenic features with viruses from different species, indicating a possible interspecies transmission.
- Genetic analysis using hybridization has proved the genetic connection of gene segments to viruses from different species.
- Some virus strains look as if they’ve been passed to a separate species as a complete genome, suggesting that interspecies transmission naturally occurs, albeit at low rates.
Evidence of Interspecies Transmission
- No direct documentation of interspecies transmission exists, but the number of atypical rotaviruses that seem to result from transmission between humans, cats and dogs; humans and cattle; humans and pigs; pigs and cattle; and pigs and horses is rising.
- The interspecies evolutionary relationships are corroborated by phylogenetic analysis of rotavirus genes from various species.
Implications for Rotavirus Vaccine Strategies
- The development of these new strains from interspecies transmission highlights the need for consideration in the design and implementation of effective human rotavirus vaccine strategies.
Cite This Article
APA
Palombo EA.
(2002).
Genetic analysis of Group A rotaviruses: evidence for interspecies transmission of rotavirus genes.
Virus Genes, 24(1), 11-20.
https://doi.org/10.1023/a:1014073618253 Publication
Researcher Affiliations
- School of Engineering and Science, Swinburne University of Technology, Hawthorn, Victoria, Australia. epalombo@swin.edu.au
MeSH Terms
- Animals
- Chickens
- Dogs
- Genes, Viral / genetics
- Genes, Viral / physiology
- Genetic Variation
- Humans
- Nucleic Acid Hybridization
- Phylogeny
- Rats
- Reassortant Viruses / genetics
- Rotavirus / classification
- Rotavirus / genetics
- Rotavirus Infections / epidemiology
- Rotavirus Infections / microbiology
- Rotavirus Infections / transmission
- Rotavirus Vaccines
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