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Volume 32, Number 10—October 2026

Dispatch

Emergence of Genotype 2.3.1 Multidrug-Resistant Salmonella enterica Serovar Typhi Strain, West Africa, 2021–2025

Elisabeth Njamkepo, Maria Pardos de la Gandara, Carolina Silva Nodari, Alexandra Moura, and François-Xavier WeillComments to Author 
Author affiliation: Institut Pasteur, Université Paris Cité, Paris, France

Main Article

Figure 3

Chromosomal integration of an AMR region derived from an IncHI1 plasmid in in study of emergence of genotype 2.3.1 multidrug-resistant Salmonella enterica serovar Typhi strain, West Africa, 2021–2025. A) Circular representation of the complete genome of isolate 202210167, a representative isolate of the emerging strain. Red square indicates the chromosomally integrated 34,664-bp AMR region in the external ring. B) Linear representation of the integrated AMR region containing the 8 AMR genes identified in the emerging strain (red indicates AMR genes, yellow indicates insertion sequences, and gray indicates other genes). AMR, antimicrobial resistance.

Figure 3. Chromosomal integration of an AMR region derived from an IncHI1 plasmid in in study of emergence of genotype 2.3.1 multidrug-resistant Salmonella enterica serovar Typhi strain, West Africa, 2021–2025. A) Circular representation of the complete genome of isolate 202210167, a representative isolate of the emerging strain. Red square indicates the chromosomally integrated 34,664-bp AMR region in the external ring. B) Linear representation of the integrated AMR region containing the 8 AMR genes identified in the emerging strain (red indicates AMR genes, yellow indicates insertion sequences, and gray indicates other genes). AMR, antimicrobial resistance.

Main Article

Page created: August 05, 2026
Page updated: September 21, 2026
Page reviewed: September 21, 2026
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