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Volume 32, Number 1—January 2026

Research Letter

Molecular Analysis of Emerging MT27 Macrolide-Resistant Bordetella pertussis, Kobe, Japan, 2025

Shoko Komatsu, Noriko NakanishiComments to Author , Kousaku Matsubara, Yuui Inenaga, Masayuki Hori, Kiyo Shiotani, Rumi Morimoto, Chie Nantani, Yuki Muneta, and Nobuya Kusunoki
Author affiliation: Kobe Institute of Health, Kobe, Japan (S. Komatsu, N. Nakanishi); Kobe City Nishi-Kobe Medical Center, Kobe (K. Matsubara, Y. Inenaga, M. Hori); Public Health Center of Kobe City, Kobe (K. Shiotani, R. Morimoto, C. Nantani, Y. Muneta, N. Kusunoki)

Main Article

Figure

Phylogenetic tree based on single-nucleotide variants, showing 15 MT27 Bordetella pertussis strains isolated in Kobe (green); 37 strains from Japan (yellow), including Tokyo (blue) and Okinawa (magenta); and 155 strains from China (gray) in study of emerging MT27 MRBP, Kobe, Japan, 2025. Scale bar indicates number of substitutions per site. *Excluding regions previously listed. MRBP, macrolide-resistant B. pertussis; MSBP, macrolide-sensitive B. pertussis; MLVA, multilocus variable-number tandem-repeat analysis; MT, MLVA type.

Figure. Phylogenetic tree based on single-nucleotide variants, showing 15 MT27 Bordetella pertussis strains isolated in Kobe (green); 37 strains from Japan (yellow), including Tokyo (blue) and Okinawa (magenta); and 155 strains from China (gray) in study of emerging MT27 MRBP, Kobe, Japan, 2025. Scale bar indicates number of substitutions per site. *Excluding regions previously listed. MRBP, macrolide-resistant B. pertussis; MSBP, macrolide-sensitive B. pertussis; MLVA, multilocus variable-number tandem-repeat analysis; MT, MLVA type.

Main Article

Page created: December 30, 2025
Page updated: January 29, 2026
Page reviewed: January 29, 2026
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