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  • Title: Susceptibility of laboratory and wild rodents to Rattus or Apodemus-type hantaviruses.
    Author: Kawamura K, Zhang XK, Arikawa J, Takashima I, Dempo K, Hashimoto N.
    Journal: Acta Virol; 1991 Jan; 35(1):54-63. PubMed ID: 1683116.
    Abstract:
    Adult Wistar rats (Rattus norvegicus), Apodemus agrarius, Meriones unguiculatus, Clethrionomys rufocanus, and Apodemus argenteus were inoculated with Rattus-type (SR-11, KI-262, and TB-314) or Apodemus-type (Hantaan 76-118) hantaviruses. Production of serum antibody to the inoculated virus (IAHA titres of 1:32 to 1:4 096) was obsersved in all rodent species 10 weeks after virus inoculation. Rattus-type virus was detected in some organs of all the rodent species employed except of Apodemus agrarius. Apodemus-type virus was found only in some organs of Apodemus agrarius. Newborn Wistar rats induced antibody in high titres to both Rattus- and Apodemus-type hantaviruses. Rattus-type virus was detected in all the organs examined for up to 6 weeks after inoculation, whereas Apodemus-type virus disappeared from all organs except of brain and lung tissues. The virulence of the three Rattus-type viruses to newborn rats was different. These findings indicate that the susceptibility of rodents may vary depending on the combination of rodent species and virus strains; they also suggest that the various species of rodents may be the reservoir animals of hantavirus infection in nature.
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