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Genome-wide analysis provides a deeper understanding of the population structure of the Salmonella enterica serotype Paratyphi B complex in Bangladesh.

Published version
Peer-reviewed

Type

Article

Change log

Authors

Rahman, Sadia Isfat Ara 
Taylor-Brown, Alyce 
Khanam, Farhana 
Khan, Ashraful Islam 
Horesh, Gal 

Abstract

The Salmonella enterica serotype Paratyphi B complex causes a wide range of diseases, from gastroenteritis to paratyphoid fever, depending on the biotypes Java and sensu stricto. The burden of Paratyphi B biotypes in Bangladesh is still unknown, as these are indistinguishable by Salmonella serotyping. Here, we conducted the first whole-genome sequencing (WGS) study on 79 Salmonella isolates serotyped as Paratyphi B that were collected from 10 nationwide enteric disease surveillance sites in Bangladesh. Placing these in a global genetic context revealed that these are biotype Java, and the addition of these genomes expanded the previously described PG4 clade containing Bangladeshi and UK isolates. Importantly, antimicrobial resistance (AMR) genes were scarce amongst Bangladeshi S. Java isolates, somewhat surprisingly given the widespread availability of antibiotics without prescription. This genomic information provides important insights into the significance of S. Paratyphi B biotypes in enteric disease and their implications for public health.

Description

Keywords

Salmonella Paratyphi B, enteric disease, serotyping, surveillance, whole-genome sequencing, Adolescent, Adult, Aged, Aged, 80 and over, Bangladesh, Child, Child, Preschool, Female, Humans, Infant, Infant, Newborn, Male, Middle Aged, Paratyphoid Fever, Salmonella, Salmonella Infections, Serogroup, Serotyping, United Kingdom, Whole Genome Sequencing, Young Adult

Journal Title

Microb Genom

Conference Name

Journal ISSN

2057-5858
2057-5858

Volume Title

7

Publisher

Microbiology Society