Hantavirus

Paul G. Auwaerter, M.D.

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MICROBIOLOGY

Segmented, negative-sense RNA virus. Large number of species (23 to date) with more discovered regularly.
Member of Bunyaviridae. Unlike other viruses in this family that are arthropod-borne, hantaviruses are rodent-borne viruses associated with specific reservoirs.
In the U.S., geographic locales differ:
- Southeast: deer mice (Peromyscus maniculatus), cotton (Sigmodon hispidus) and rice (Oryzomys palustris) rats
- Northeast: the white-footed mouse (Peromyscus leucopus) has been associated.
Transmission to humans through inhalation of aerosolized saliva, urine or feces of reservoir host.
Hantavirus New World: (e.g., Sin Nombre virus) known to cause hantavirus pulmonary syndrome (HPS)
- Carried by the New World rats and mice, family Muridae, subfamily Sigmodontinae; these rodents are not found in urban sites.
  - Deer mouse
  - Cotton rat
  - Rice rat
  - White-footed mouse
Hantaan virus, Old World: may cause hemorrhagic fever with renal syndrome (HFRS), from an infected rodent or rodent excretions exposure.
- Known rodent carriers:
  - Striped field mouse (Apodemus agrarius, Saaremaa and Hantaan virus)
  - Brown or Norway rat (Rattus norvegicus, Seoul virus)
  - Bank vole (Clethrionomys glareolus, Puumala virus)
  - Yellow-necked field mouse (Apodemus flavicollis, Dobrava virus)
- Puumala virus, a hantavirus carried in bank voles, may cause Nephropathia epidemica in humans primarily in Europe, western Russia.
- Dobrava-Belgrade virus (DOBV) causes a more severe HFRS, again in Europe.
- Hantaan virus: HFRS in predominantly eastern Asia
- Saaremaa virus: Scandinavia, central Europe
- Seoul virus: HFRS worldwide, most commonly in Asia, rare cases in North America.

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MICROBIOLOGY

Segmented, negative-sense RNA virus. Large number of species (23 to date) with more discovered regularly.
Member of Bunyaviridae. Unlike other viruses in this family that are arthropod-borne, hantaviruses are rodent-borne viruses associated with specific reservoirs.
In the U.S., geographic locales differ:
- Southeast: deer mice (Peromyscus maniculatus), cotton (Sigmodon hispidus) and rice (Oryzomys palustris) rats
- Northeast: the white-footed mouse (Peromyscus leucopus) has been associated.
Transmission to humans through inhalation of aerosolized saliva, urine or feces of reservoir host.
Hantavirus New World: (e.g., Sin Nombre virus) known to cause hantavirus pulmonary syndrome (HPS)
- Carried by the New World rats and mice, family Muridae, subfamily Sigmodontinae; these rodents are not found in urban sites.
  - Deer mouse
  - Cotton rat
  - Rice rat
  - White-footed mouse
Hantaan virus, Old World: may cause hemorrhagic fever with renal syndrome (HFRS), from an infected rodent or rodent excretions exposure.
- Known rodent carriers:
  - Striped field mouse (Apodemus agrarius, Saaremaa and Hantaan virus)
  - Brown or Norway rat (Rattus norvegicus, Seoul virus)
  - Bank vole (Clethrionomys glareolus, Puumala virus)
  - Yellow-necked field mouse (Apodemus flavicollis, Dobrava virus)
- Puumala virus, a hantavirus carried in bank voles, may cause Nephropathia epidemica in humans primarily in Europe, western Russia.
- Dobrava-Belgrade virus (DOBV) causes a more severe HFRS, again in Europe.
- Hantaan virus: HFRS in predominantly eastern Asia
- Saaremaa virus: Scandinavia, central Europe
- Seoul virus: HFRS worldwide, most commonly in Asia, rare cases in North America.

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