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Volume 32, Number 4—April 2026

Dispatch

Whole-Genome Analysis of Treponema pallidum subsp. endemicum among Men Who Have Sex with Men, Japan, 2020–2023

Yuki OhamaComments to Author , Kazuo Imai, Yuto Kotaka, Kenichi Lee, Ichiro Itoda, Shu-ichi Nakayama, Makoto Ohnishi, and Yukihiro Akeda
Author affiliation: National Institute of Infectious Diseases, Tokyo, Japan (Y. Ohama, Y. Kotaka, K. Lee, S. Nakayama, M. Ohnishi, Y. Akeda); Saitama Medical University, Saitama, Japan (K. Imai); Tokyo Metropolitan University, Tokyo (Y. Kotaka); Shirakaba Clinic, Tokyo (I. Itoda)

Main Article

Table

Summary of strains from a whole-genome analysis of Treponema pallidum subsp. endemicum among men who have sex with men, Japan, 2020–2023*

Strain name Year detected Patient sex Sexual orientation Source of transmission Location GenBank accession no. Reference
NIIDTP373 2020 M MSM Sexual Osaka, Japan Not available This study
NIIDTP389 2020 M MSM Sexual Tokyo, Japan Not available This study
NIIDTP404 2021 M MSM Sexual Tokyo, Japan DRX678426 This study
NIIDTP415 2021 M MSM Sexual Tokyo, Japan DRX678427 This study
NIIDTP523 2022 M Unknown Sexual Tokyo, Japan DRX678428 This study
Japan320e 2019 M MSM Sexual Tokyo, Japan NZ_CP073523 (7)
Japan322e 2019 M MSM Sexual Tokyo, Japan NZ_CP073522 (7)
Japan326e 2019 M MSM Sexual Tokyo, Japan NZ_CP073518 (7)
Japan346e 2019 M Unknown Sexual Tokyo, Japan NZ_CP073506 (7)
Iraq B 1951 F Unknown Unknown Iraq NZ_CP032303 (8)
Bosnia A 1950 M Unknown Unknown Bosnia NZ_CP007548 (9)
C77 2014 M MSM Sexual Cuba NZ_CP081507 (10)
C279 2017 M MSM Sexual Cuba NZ_CP078090 (10)

*MSM, men who have sex with men.

Main Article

References
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