Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos

Antimicrobial resistant (AMR) Enterobacterales are widely distributed among the healthy population of the Indochinese peninsula, including Laos. However, the local reservoir of these pathogens are currently not known and possible sources such as agricultural settings and food have rarely been analyz...

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Main Authors: Aline I. Moser, Esther Kuenzli, Edgar I. Campos-Madueno, Thomas Büdel, Sayaphet Rattanavong, Manivanh Vongsouvath, Christoph Hatz, Andrea Endimiani
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-07-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmicb.2021.708182/full
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author Aline I. Moser
Esther Kuenzli
Esther Kuenzli
Esther Kuenzli
Edgar I. Campos-Madueno
Thomas Büdel
Sayaphet Rattanavong
Manivanh Vongsouvath
Christoph Hatz
Christoph Hatz
Christoph Hatz
Christoph Hatz
Andrea Endimiani
author_facet Aline I. Moser
Esther Kuenzli
Esther Kuenzli
Esther Kuenzli
Edgar I. Campos-Madueno
Thomas Büdel
Sayaphet Rattanavong
Manivanh Vongsouvath
Christoph Hatz
Christoph Hatz
Christoph Hatz
Christoph Hatz
Andrea Endimiani
author_sort Aline I. Moser
collection DOAJ
description Antimicrobial resistant (AMR) Enterobacterales are widely distributed among the healthy population of the Indochinese peninsula, including Laos. However, the local reservoir of these pathogens are currently not known and possible sources such as agricultural settings and food have rarely been analyzed. In this work, we investigated the extended-spectrum cephalosporin- (ESC-) and colistin-resistant Escherichia coli strains (CST-R-Ec) isolated from the gut of local people, feces of poultry, and from chicken meat (60 samples each group) in Laos. Whole-genome sequencing (WGS) analysis based on both short- and long-read sequencing approaches were implemented. The following prevalence of ESC-R-Ec and CST-R-Ec were recorded, respectively: local people (70 and 15%), poultry (20 and 23.3%), and chicken meat (21.7 and 13.3%). Core-genome analysis, coupled with sequence type (ST)/core-genome ST (cgST) definitions, indicated that no common AMR-Ec clones were spreading among the different settings. ESC-R-Ec mostly possessed blaCTX–M–15 and blaCTX–M–55 associated to ISEcp1 or IS26. The majority of CST-R-Ec carried mcr-1 on IncX4, IncI2, IncP1, and IncHI1 plasmids similar or identical to those described worldwide; strains with chromosomal mcr-1 or possessing plasmid-mediated mcr-3 were also found. These results indicate a high prevalence of AMR-Ec in the local population, poultry, and chicken meat. While we did not observe the same clones among the three settings, most of the blaCTX–Ms and mcr-1/-3 were associated with mobile-genetic elements, indicating that horizontal gene transfer may play an important role in the dissemination of AMR-Ec in Laos. More studies should be planned to better understand the extent and dynamics of this phenomenon.
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spelling doaj.art-35093056c1cd45be8e13e490e653314f2022-12-21T18:56:21ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2021-07-011210.3389/fmicb.2021.708182708182Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in LaosAline I. Moser0Esther Kuenzli1Esther Kuenzli2Esther Kuenzli3Edgar I. Campos-Madueno4Thomas Büdel5Sayaphet Rattanavong6Manivanh Vongsouvath7Christoph Hatz8Christoph Hatz9Christoph Hatz10Christoph Hatz11Andrea Endimiani12Institute for Infectious Diseases, University of Bern, Bern, SwitzerlandDepartment of Public Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, SwitzerlandSwiss Tropical and Public Health Institute, Basel, SwitzerlandUniversity of Basel, Basel, SwitzerlandInstitute for Infectious Diseases, University of Bern, Bern, SwitzerlandInstitute for Infectious Diseases, University of Bern, Bern, SwitzerlandMicrobiology Laboratory, Mahosot Hospital, Vientiane, LaosMicrobiology Laboratory, Mahosot Hospital, Vientiane, LaosDepartment of Public Health, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, SwitzerlandSwiss Tropical and Public Health Institute, Basel, SwitzerlandUniversity of Basel, Basel, SwitzerlandDivision of Infectious Diseases and Hospital Epidemiology, Kantonsspital St. Gallen, St. Gallen, SwitzerlandInstitute for Infectious Diseases, University of Bern, Bern, SwitzerlandAntimicrobial resistant (AMR) Enterobacterales are widely distributed among the healthy population of the Indochinese peninsula, including Laos. However, the local reservoir of these pathogens are currently not known and possible sources such as agricultural settings and food have rarely been analyzed. In this work, we investigated the extended-spectrum cephalosporin- (ESC-) and colistin-resistant Escherichia coli strains (CST-R-Ec) isolated from the gut of local people, feces of poultry, and from chicken meat (60 samples each group) in Laos. Whole-genome sequencing (WGS) analysis based on both short- and long-read sequencing approaches were implemented. The following prevalence of ESC-R-Ec and CST-R-Ec were recorded, respectively: local people (70 and 15%), poultry (20 and 23.3%), and chicken meat (21.7 and 13.3%). Core-genome analysis, coupled with sequence type (ST)/core-genome ST (cgST) definitions, indicated that no common AMR-Ec clones were spreading among the different settings. ESC-R-Ec mostly possessed blaCTX–M–15 and blaCTX–M–55 associated to ISEcp1 or IS26. The majority of CST-R-Ec carried mcr-1 on IncX4, IncI2, IncP1, and IncHI1 plasmids similar or identical to those described worldwide; strains with chromosomal mcr-1 or possessing plasmid-mediated mcr-3 were also found. These results indicate a high prevalence of AMR-Ec in the local population, poultry, and chicken meat. While we did not observe the same clones among the three settings, most of the blaCTX–Ms and mcr-1/-3 were associated with mobile-genetic elements, indicating that horizontal gene transfer may play an important role in the dissemination of AMR-Ec in Laos. More studies should be planned to better understand the extent and dynamics of this phenomenon.https://www.frontiersin.org/articles/10.3389/fmicb.2021.708182/fullmcr-1mcr-3CTX-ME. coliLaosgut colonization
spellingShingle Aline I. Moser
Esther Kuenzli
Esther Kuenzli
Esther Kuenzli
Edgar I. Campos-Madueno
Thomas Büdel
Sayaphet Rattanavong
Manivanh Vongsouvath
Christoph Hatz
Christoph Hatz
Christoph Hatz
Christoph Hatz
Andrea Endimiani
Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
Frontiers in Microbiology
mcr-1
mcr-3
CTX-M
E. coli
Laos
gut colonization
title Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
title_full Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
title_fullStr Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
title_full_unstemmed Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
title_short Antimicrobial-Resistant Escherichia coli Strains and Their Plasmids in People, Poultry, and Chicken Meat in Laos
title_sort antimicrobial resistant escherichia coli strains and their plasmids in people poultry and chicken meat in laos
topic mcr-1
mcr-3
CTX-M
E. coli
Laos
gut colonization
url https://www.frontiersin.org/articles/10.3389/fmicb.2021.708182/full
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