hantavirus


hantavirus
/hahn"teuh vuy'reuhs, han"-/, n., pl. hantaviruses.
any of several viruses of the family Bunyaviridae, spread chiefly by wild rodents, that cause acute respiratory illness, kidney failure, and other syndromes.
[1975-80; after the Hantaan River in Korea, near which the virus first afflicted Westerners in the 1950s]

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Genus of viruses of the family Bunyaviridae that cause pneumonia and hemorrhagic fevers.

Carried by rodents, they spread to humans directly or by inhalation but apparently are not transmitted from one person to another. An outbreak in the 1990s in the southwestern U.S. caused a mysterious, often fatal, flulike illness with rapid respiratory failure in previously healthy adults. The culprit was a hantavirus type carried by mice and not previously associated with human illness in the U.S.

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virus
      any member of a genus of viruses (Hantavirus) of the family Bunyaviridae that cause acute respiratory illnesses in humans. The hantaviruses are rodent-borne viruses, each of which has been evolutionarily adapted to a specific rodent host. Human infection occurs where people come into unusual and intense contact with infected rodent populations, mainly through inhaling dust containing dried rodent excreta in and around the home but also in the wild.

      There are several different hantaviruses, each with its specific rodent carrier, and they cause two basic groups of disease. The first group is known as hemorrhagic fever with renal syndrome (HFRS); these illnesses are characterized by acute fever, internal bleeding, and kidney failure. One of the first HFRS illnesses to be characterized was Korean hemorrhagic fever (also called hemorrhagic nephroso-nephritis), recognized during the Korean War (1950–53). Korean hemorrhagic fever is fatal in 10 to 15 percent of cases. It is caused by the Hantaan virus and is carried by the striped field mouse (Apodemus agrarius), a type of wood mouse that is prevalent in Asia and eastern Europe. A second HFRS disease, nephropathia epidemica, is usually not fatal. It is caused by the Puumala virus, which is carried by the bank vole (Clethrionomys glareolus). Nephropathia epidemica has occurred in Scandinavia, western Russia, and other parts of Europe.

      The second group of hantavirus diseases is hantavirus pulmonary syndrome (HPS), now recognized in a number of separate locations throughout the Western Hemisphere. HPS illnesses show a rapid onset of muscle ache and fever, leading to acute respiratory distress. These illnesses are frequently fatal. The first HPS illness was identified in the southwestern United States in 1993; it is associated with a virus called Sin Nombre and is carried by the deer mouse (Peromyscus maniculatus). Other illnesses occur in Florida (the Black Creek Canal virus, carried by the hispid cotton rat [Sigmodon hispidus]), Louisiana (the Bayou virus, carried by the marsh rice rat [Oryzomys palustris]), Chile and Argentina (the Andes virus, carried by Oligoryzomys longicaudatus, a species of pygmy rice rat), and Central America (the Choclo virus, carried by Oligoryzomys fulvescens, another pygmy rice rat).

      Hantavirus infections are diagnosed by the symptoms, by a history of exposure to rodents, and by laboratory identification of antibodies to the virus circulating in the blood. Some cases have been treated (therapeutics) with antiviral drugs such as ribavirin, but in most cases the focus is on controlling body temperature, fluids, and electrolytes. In severe cases the breathing is aided mechanically, and toxins are removed through kidney dialysis. Hantavirus infections can be prevented by controlling rodent infestations around dwellings, by washing infested areas with solvents and disinfectants, and by limiting exposure to likely rodent environments in the wild.

David Morens
 

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Universalium. 2010.

Look at other dictionaries:

  • Hantavirus — Hantavirus …   Wikipédia en Français

  • hantavirus — [ ɑ̃tavirys ] n. m. • 1994; de Hantaan n. pr. et virus ♦ Biol. Virus à A. R. N. qui provoque des fièvres hémorragiques. hantavirus [ ɑ̃taviʀys] n. m. ÉTYM. 1994; du nom du biologiste Hantaan, et de virus. ❖ ♦ Biol. Virus à A. R. N., qui provoque… …   Encyclopédie Universelle

  • Hantavirus — См. Хантавирус (Источник: «Словарь терминов микробиологии») …   Словарь микробиологии

  • hantavirus — [han′tə vī΄rəs] n. [after Hantaan River in S. Korea, where the disease was first identified] any of a group of RNA viruses; esp., one spread by contact with rodent urine and feces, that can cause flulike symptoms and sometimes a fatal lung or… …   English World dictionary

  • Hantavirus —   Hantavirus …   Wikipedia Español

  • Hantavirus — Taxobox name = Hantavirus image caption = Transmission electron micrograph of the Sin Nombre Hantavirus virus group = v familia = Bunyaviridae genus = Hantavirus subdivision ranks = Species subdivision = Andes virus (ANDV) Bayou virus (BAYV)… …   Wikipedia

  • Hantavirus — Hantavirus …   Wikipédia en Français

  • Hantavirus — Gattung Hantavirus Sin Nombre virus Systematik Reich: Viren Ordnung: nicht klassifiziert …   Deutsch Wikipedia

  • Hantavirus — A group of viruses that cause hemorrhagic fever and pneumonia. The Hantaviruses include the Hantaan virus that causes Korean (and Manchurian) hemorrhagic fever. The Hantavirus Pulmonary Syndrome (HPS) struck the Four Corner area (where the States …   Medical dictionary

  • hantavirus — Género de virus de la familia Bunyaviridae, que causa neumonía y fiebres hemorrágicas. Portados por roedores, se diseminan a los seres humanos directamente o por inhalación, pero al parecer no se transmiten de una persona a otra. En la década de… …   Enciclopedia Universal


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