Biology:Robovirus
A robovirus is a zoonotic virus that is transmitted by a rodent vector (i.e., rodent borne).[1][2]
Roboviruses mainly belong to the virus families Arenaviridae and Hantaviridae.[3][4] Like arbovirus (arthropod borne) and tibovirus (tick borne) the name refers to its method of transmission, known as its vector. This is distinguished from a clade, which groups around a common ancestor. Some scientists now refer to arbovirus and robovirus together with the term ArboRobo-virus.[5]
Methods of transmission
Rodent borne disease can be transmitted through different forms of contact such as rodent bites, scratches, urine, saliva, etc.[6] Potential sites of contact with rodents include habitats such as barns, outbuildings, sheds, and dense urban areas. Transmission of disease through rodents can be spread to humans through direct handling and contact, or indirectly through rodents carrying the disease spread to ticks, mites, fleas (arboborne).[citation needed]
Viral diseases transmitted by rodents
One example of a robovirus is hantavirus, which causes hantavirus pulmonary syndrome. Humans can be infected with Hantavirus Pulmonary Syndrome through direct contact with rodent droppings, saliva, or urine infected with strains of the virus. These components mix into the air and get transmitted when inhaled through airborne transmission.[7]
Lassa virus from the Arenaviridae family causes Lassa hemorrhagic fever and is also a robovirus transmitted by the rodent genus Mastomys natalensis.[8][9] The multimammate rat is able to excrete the virus in its urine and droppings. These rat are often found in the savannas and forests of Africa. When these rats scavenge and enter households this provides an outlet for direct contact transmission with humans. It has also been found that airborne transmission can occur by engaging in cleaning activities such as sweeping. In some areas of Africa, the Mastomys rodent is caught and used as a source of food. This process can also lead to transmission and infection.[10]
Viral diseases indirectly transmitted by rats
Colorado tick fever virus causes high fevers, chills, headache, fatigue and sometimes vomiting, skin rash, and abdominal pain. The virus is caused by a Rocky Mountain wood tick (Dermacentor andersoni). It is an arbovirus, but rodents serve as the reservoir. The tick is carried by five species of rodents: the least chipmunk (Eutamias minimus), Richardson's ground squirrel (Urocitellus richardsonii), deer mice (Peromyscus maniculatus), the golden-mantled ground squirrel (Callospermophilus lateraliss), and the Uinta chipmunk (Neotamias umbrinus).[11] The infected tick will be carried by its rodent host and infect another host (animal or human) as it feeds.[12]
Factors affecting roboviruses
Rodent populations are affected by a number of diverse factors, including climatic conditions. Warmer winters and increased rainfall will make it more likely for rodent populations to survive, therefore increasing the number of rodent reservoirs for disease. Increased rainfall accompanied by flooding can also increase human to rodent contact[13] Global climate change will affect the distribution and prevalence of roboviruses. Inadequate hygiene and sanitation, as seen in some European countries, also contribute to increase rodent populations and higher risks of rodent borne disease transmission.[14]
References
- ↑ Spicer, W. John (2008). Clinical Microbiology and Infectious Diseases. Edinburgh: Churchill Livingstone. p. 117. ISBN 978-0-443-10303-2.
- ↑ Sandra I Kim; Swanson, Todd; Flomin, Olga E. (2008). Microbiology. Philadelphia: Wolters Kluwer Heath. p. 88. ISBN 978-0-7817-6470-4.
- ↑ Briese, Thomas et al. (2016) Create a new order, Bunyavirales, to accommodate nine families (eight new, one renamed) comprising thirteen genera. ICTV 11th report
- ↑ Hjelle, Brian; Torres-Perez, Fernando (2009). "Ch. 34. Rodent-Borne Viruses". in Steven Specter. Clinical Virology Manual (4th ed.). American Society for Microbiology. pp. 641–657. doi:10.1128/9781555815974.ch34. ISBN 9781555815974.
- ↑ Kurolt; Ivan-Christian (14 November 2014). "Molecular epidemiology of human pathogenic "ArboRobo-viruses" in Croatia.". CroViWo-1st Croatian Virus Workshop. Rijeka. pp. 15–16. http://www.hmd-cms.hr/croviwo/wp-content/themes/dz42/media/CroViWO-Book-of-Abstracts.pdf. Retrieved 25 November 2015.
- ↑ "Rodents", U.S. Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases, and Division of High- Consequence Pathogens and Pathology.
- ↑ "Transmission | Hantavirus". 29 August 2012. https://www.cdc.gov/hantavirus/hps/transmission.html.
- ↑ Lecompte, Emilie; Fichet-Calvet, Elisabeth; Daffis, Stephane; Koulemou, Kekoura; Sylla, Oumar; Kourouma, Fode; Dore, Amadou; Soropogui, Barre et al. (2006). "Mastomys natalensis and Lassa Fever, West Africa". Emerging Infectious Diseases 12 (12): 1971–1974. doi:10.3201/eid1212.060812. PMID 17326956.
- ↑ McCormick, Joseph B.; King, Isabel J.; Webb, Patricia A.; Scribner, Curtis L.; Craven, Robert B.; Johnson, Karl M.; Elliott, Luanne H.; Belmont-Williams, Rose (2 January 1986). "Lassa Fever". New England Journal of Medicine 314 (1): 20–26. doi:10.1056/nejm198601023140104. PMID 3940312.
- ↑ "Transmission of Lassa fever". 2019-03-06. https://www.cdc.gov/vhf/lassa/transmission/index.html.
- ↑ Bowen, G. S.; Kirk, L. J.; Shriner, R. B.; McLean, R. G.; Pokorny, K. S. (1980). "Experimental Colorado Tick Fever virus Infection in Colorado Mammals". The American Journal of Tropical Medicine and Hygiene 30 (1): 224–229. doi:10.4269/ajtmh.1981.30.224. PMID 6259958.
- ↑ Colorado Tick fever - "Transmission", U.S. Centers for Disease Control and Prevention.
- ↑ Charron, Dominique F., Fleury, Manon, Lindsay, Leslie Robbin, Ogden, Nicholas and Schuster-Wallace, Corinne J. (2008) "The Impacts of Climate Change on Water-, Food-, Vector- and Rodent-Borne Diseases" in Human Health in a Changing Climate. ed. Séguin, Jacinthe. Health Canada, Ch. 5, p. 188
- ↑ "Rodent-borne diseases" (website). 2009. https://ecdc.europa.eu/en/climate-change/climate-change-europe/rodent-borne-diseases.
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