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Volume 32, Number 9—September 2026

Research

Reemergence of Scrub Typhus Associated with Leptotrombidium akamushi Mites and Karp-Like Orientia tsutsugamushi Genotype Bacteria, Japan, 2024–2025

Motohiko OgawaComments to Author , Nobuhiro Takada, Takashi Katayama, Yuki Hashimoto, Kei Nagano, Hirotaka Komine, and Yukihiro Akeda
Author affiliation: National Institute of Infectious Diseases, Japan Institute for Health Security, Tokyo, Japan (M. Ogawa, Y. Hashimoto, Y. Akeda); University of Fukui, Fukui, Japan (N. Takada); Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan (T. Katayama); Niigata City General Hospital, Niigata, Japan (K. Nagano); Yamagata University, Yamagata, Japan (H. Komine)

Main Article

Table

Number of mice and mites collected per site in an investigation of reemergence of scrub typhus associated with Leptotrombidium akamushi mites and Karp-like Orientia tsutsugamushi genotype bacteria, Japan, 2024–2025*

Collection site and month collected
 Total no. mice captured
 No. mites collected†
Total no. collected
 Mean no./mouse
Site A
June 20 130 6.5
July 11 0 0
August NS NS NS
November
 7
 114
 16.3
Site B
June 2 24 12
July 5 54 10.8
August 8 5 0.6
November 1 0 0

*Sampling sites were within ≈200 meters of the suspected exposure site in Nagaoka City, Niigata Prefecture, Japan (37°27.283′N, 138°50.269′E). Site A was dense bushy vegetation adjacent to farmland; and site B was dense bushy vegetation immediately adjacent to the Shinano River. NS, not sampled. †Mite species included L. akamushi, L. pallidum, Neotrombicula japonica, and other unidentified species.

Main Article

Page created: August 05, 2026
Page updated: August 26, 2026
Page reviewed: August 26, 2026
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