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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

Figure 3

Seasonal abundance and species composition of trombiculid mites collected from field mice in a study of reemergence of scrub typhus associated with Leptotrombidium akamushi mites and Karp-like Orientia tsutsugamushi genotype bacteria, Japan, 2024–2025. A) Site A, near a tract of farmland; B) site B, near the riverbank. Graphs show mean numbers of mites per mouse and species composition for each sampling period. Mite species composition differed markedly between the sites: L. pallidum was predominant at site A in June (early summer) and November (autumn), whereas L. akamushi was predominant at site B in July (summer). Neotrombicula japonica and other mite species were also detected.

Figure 3. Seasonal abundance and species composition of trombiculid mites collected from field mice in a study of reemergence of scrub typhus associated with Leptotrombidium akamushi mites and Karp-like Orientia tsutsugamushi genotype bacteria, Japan, 2024–2025. A) Site A, near a tract of farmland; B) site B, near the riverbank. Graphs show mean numbers of mites per mouse and species composition for each sampling period. Mite species composition differed markedly between the sites: L. pallidum was predominant at site A in June (early summer) and November (autumn), whereas L. akamushi was predominant at site B in July (summer). Neotrombicula japonica and other mite species were also detected.

Main Article

Page created: August 05, 2026
Page updated: August 18, 2026
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