Orientia tsutsugamushi infection in rodents in Anhui Province of China.

Infect Genet Evol

Department of Microbiology, School of Basic Medical Sciences, Anhui Provincial Laboratory of Microbiology and Parasitology; Anhui Key Laboratory of Zoonoses, Anhui Medical University, China. Electronic address:

Published: December 2017

AI Article Synopsis

  • An investigation was conducted in Anhui Province, where 56 rodents (44 Apodemus agrarius and 12 Niviventer niviventer) were trapped to study Orientia tsutsugamushi infection.
  • The overall infection rate among the captured rodents was found to be 23.2%, with Apodemus agrarius showing a higher detection rate (27.3%) compared to Niviventer niviventer (8.3%).
  • Two genotypes (Karp and Gilliam strains) of the pathogen were identified, marking the first report of these strains in non-endemic regions of Anhui Province and confirming Apodemus agrarius as the primary host for O. tsutsugamushi.

Article Abstract

We conducted an investigation of Orientia tsutsugamushi infection among rodents in non-endemic areas in Anhui Province. Fifty-six (56) rodents including 44 Apodemus agrarius and 12 Niviventer niviventer were trapped and captured in autumn in the fields of three counties in Anhui Province. DNA samples were amplified and sequenced for the 56kDa protein gene of Orientia tsutsugamushi. The overall infection rate in the rodents was 23.2%(13/56). The rate of detection of O. tsutsugamushi in Apodemus agrarius and Niviventer niviventer were 27.3% and 8.3% respectively. Moreover, we identified two genotypes (Karp and Gilliam strains) of Orientia tsutsugamushi in rodents. Our study demonstrated that Apodemus agrarius is the main host for O. tsutsugamushi pathogen and this is the first report of Karp and Gilliam strains in these non-endemic areas in Anhui Province.

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http://dx.doi.org/10.1016/j.meegid.2017.10.014DOI Listing

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