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Volume 30, Number 1—January 2024

Research

Molecular Evolution and Increasing Macrolide Resistance of Bordetella pertussis, Shanghai, China, 2016–2022

Pan Fu1Comments to Author , Jinlan Zhou1, Chao Yang, Yaxier Nijiati, Lijun Zhou, Gangfen Yan, Guoping Lu, Xiaowen ZhaiComments to Author , and Chuanqing WangComments to Author 
Author affiliations: National Children's Medical Center, Shanghai, China (P. Fu, J. Zhou, Y. Nijiati, L. Zhou, G. Yan, G. Lu, X. Zhai, C. Wang); Chinese Academy of Sciences, Shanghai (C. Yang)

Main Article

Figure 2

Distributions of prevalent Bordetella pertussis subtypes over time (A) and by age group (B), Shanghai, China, 2016–2022. Fourteen MTs were identified in this study. MT27 was the major strain during 2016–2019, whereas MT28 isolates increased quickly during 2021–2022 (panel A). MT distributions in infants (0–1 years of age) and noninfants (>1–12 years of age) change substantially from 2016–2019 to 2021–2022 (panel B). MT, multilocus variable-number tandem-repeat analysis type.

Figure 2. Distributions of prevalent Bordetella pertussis subtypes over time (A) and by age group (B), Shanghai, China, 2016–2022. Fourteen MTs were identified in this study. MT27 was the major strain during 2016–2019, whereas MT28 isolates increased quickly during 2021–2022 (panel A). MT distributions in infants (0–1 years of age) and noninfants (>1–12 years of age) change substantially from 2016–2019 to 2021–2022 (panel B). MT, multilocus variable-number tandem-repeat analysis type.

Main Article

1These first authors contributed equally to this article.

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