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Regional sequencing collaboration reveals persistence of the T12 Vibrio cholerae O1 lineage in West Africa | Journal Article / Research | MSF Science Portal
Journal Article
|Research

Regional sequencing collaboration reveals persistence of the T12 Vibrio cholerae O1 lineage in West Africa

Ekeng E, Tchatchouang S, Akenji B, Issaka B, Akintayo I, Chukwu C, Dano ID, Melingui S, Ousmane S, Popoola MO, Nzouankeu A, Luquero FJ, Ahumibe A, Naidoo I, Azman AS, Lessler J, Wohl S
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Abstract
BACKGROUND
Despite recent insights into cholera transmission patterns in Africa, regional and local dynamics in West Africa-where cholera outbreaks occur every few years-are still poorly understood. Coordinated genomic surveillance of Vibrio cholerae in the areas most affected may reveal transmission patterns important for cholera control.

METHODS
During a regional sequencing workshop in Nigeria, we sequenced 46 recent V. cholerae isolates from Cameroon, Niger, and Nigeria (37 from 2018 to 2019) to better understand the relationship between the V. cholerae bacterium circulating in these three countries.

RESULTS
From these isolates, we generated 44 whole Vibrio cholerae O1 sequences and analyzed them in the context of 1280 published V. cholerae O1 genomes. All sequences belonged to the T12 V. cholerae seventh pandemic lineage.

CONCLUSIONS
Phylogenetic analysis of newly generated and previously published V. cholerae genomes suggested that the T12 lineage has been continuously transmitted within West Africa since it was first observed in the region in 2009, despite lack of reported cholera in the intervening years. The results from this regional sequencing effort provide a model for future regionally coordinated surveillance efforts.

Countries

Cameroon Niger Nigeria

Subject Area

water and sanitationgenetics & genomicscholera

Languages

English
DOI
10.7554/eLife.65159
Published Date
18 Jun 2021
PubMed ID
34143732
Journal
eLife
Volume | Issue | Pages
Volume 10, Pages e65159
Issue Date
2021-06-18
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