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Peer-reviewedCC BY-NC-NDInternal Medicine

Tsutsugamushi Disease in a Non-endemic Season and Region: Suspected Indoor Exposure via Pet-associated Vector Entry

  • Tomoya Shiba
  • Norihiko Terada
  • Hiromichi Suzuki
  • Kazuhito Hirose
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Abstract

We report a case of tsutsugamushi disease in a 41-year-old woman diagnosed during a non-endemic season in a previously low-incidence region without any history of outdoor exposure. The patient owned five cats with close contact that moved freely between the indoor and outdoor environments, suggesting the possibility that infected chiggers were carried indoors by the cats and transmitted Orientia tsutsugamushi to the patient. This case suggests that tsutsugamushi disease may be under-recognized and under-reported in such regions. Even in the absence of typical histories such as outdoor exposure, a detailed examination of pet ownership may help raise clinical suspicion.

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Cite

BibTeXRIS
BibTeX
@article{shiba2026tsutsugamushi,
  title = {{Tsutsugamushi Disease in a Non-endemic Season and Region: Suspected Indoor Exposure via Pet-associated Vector Entry}},
  author = {Tomoya Shiba and Norihiko Terada and Hiromichi Suzuki and Kazuhito Hirose},
  journal = {Internal Medicine},
  year = {2026},
  month = aug,
  doi = {10.2169/internalmedicine.6408-25},
  url = {https://www.jstage.jst.go.jp/article/internalmedicine/65/16/65_6408-25/_article},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Tsutsugamushi Disease in a Non-endemic Season and Region: Suspected Indoor Exposure via Pet-associated Vector Entry
AU  - Tomoya Shiba
AU  - Norihiko Terada
AU  - Hiromichi Suzuki
AU  - Kazuhito Hirose
PY  - 2026
DA  - 2026/08/15
JO  - Internal Medicine
DO  - 10.2169/internalmedicine.6408-25
UR  - https://www.jstage.jst.go.jp/article/internalmedicine/65/16/65_6408-25/_article
AB  - We report a case of tsutsugamushi disease in a 41-year-old woman diagnosed during a non-endemic season in a previously low-incidence region without any history of outdoor exposure. The patient owned five cats with close contact that moved freely between the indoor and outdoor environments, suggesting the possibility that infected chiggers were carried indoors by the cats and transmitted Orientia tsutsugamushi to the patient. This case suggests that tsutsugamushi disease may be under-recognized and under-reported in such regions. Even in the absence of typical histories such as outdoor exposure, a detailed examination of pet ownership may help raise clinical suspicion.
SN  - 1349-7235
SN  - 0918-2918
ER  -