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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 4

Minimum-spanning tree of 283 Bordetella pertussis MTs, Shanghai, China, 2016–2022. A) Virulence genotype profiles; B) A2047G mutations; C) pre-2020 versus post-2020. Circle sizes indicate the number of each MT. Differences in the length and thickness of the lines linking 2 circles indicate differences in the number of variable-number tandem repeats between the 2 linked MTs. MT, multilocus variable-number tandem repeat analysis type.

Figure 4. Minimum-spanning tree of 283 Bordetella pertussis MTs, Shanghai, China, 2016–2022. A) Virulence genotype profiles; B) A2047G mutations; C) pre-2020 versus post-2020. Circle sizes indicate the number of each MT. Differences in the length and thickness of the lines linking 2 circles indicate differences in the number of variable-number tandem repeats between the 2 linked MTs. MT, multilocus variable-number tandem repeat analysis type.

Main Article

1These first authors contributed equally to this article.

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