Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.

The research aims to provide insights into the sources of contamination, prevalence of common serovars, determination of sequence types, prediction of genes associated with antimicrobial resistance, and phylogenetic analysis to evaluate genetic diversity and correlations between serovars and sequenc...

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Main Authors: Luis Lozano-Aguirre, Josefina Duran-Bedolla, Juan Téllez-Sosa, Cindy Fabiola Hernández-Pérez, Ismael Hernández-Lucas, Humberto Barrios-Camacho
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0323872
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author Luis Lozano-Aguirre
Josefina Duran-Bedolla
Juan Téllez-Sosa
Cindy Fabiola Hernández-Pérez
Ismael Hernández-Lucas
Humberto Barrios-Camacho
author_facet Luis Lozano-Aguirre
Josefina Duran-Bedolla
Juan Téllez-Sosa
Cindy Fabiola Hernández-Pérez
Ismael Hernández-Lucas
Humberto Barrios-Camacho
author_sort Luis Lozano-Aguirre
collection DOAJ
description The research aims to provide insights into the sources of contamination, prevalence of common serovars, determination of sequence types, prediction of genes associated with antimicrobial resistance, and phylogenetic analysis to evaluate genetic diversity and correlations between serovars and sequence types in Salmonella enterica in Mexico. We analyzed 818 publicly accessible whole-genome sequences from Mexico, which included isolates from diverse sources such as poultry, meat, water, and agricultural environments. We identified fifty-seven serovars, of which 19.8% corresponded to S. Infantis, 10.7% to S. Anatum, and 6.6% to S. Newport, representing the most common serovars. Phylogenetic analysis shows a strong correlation between sequence type and serovar. For example, ST32 for S. Infantis and ST64 for S. Anatum show this. However, serovars such as S. Newport possessed considerable genomic diversity, suggesting complex contamination pathways. The analysis showed that many isolates have been identified as multidrug-resistant, exhibiting resistance gene profiles for aminoglycosides, β-lactams, fluoroquinolones, sulfonamides, and tetracyclines. The findings emphasize the importance of identifying contamination sources to monitor the dissemination of multidrug-resistant Salmonella in regions that have significant antibiotic consumption in agriculture and farming, highlighting its global relevance for food safety and public health.
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spelling doaj-art-4d4dab29633347d8950555cc27e3ee4a2025-08-20T02:33:15ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01205e032387210.1371/journal.pone.0323872Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.Luis Lozano-AguirreJosefina Duran-BedollaJuan Téllez-SosaCindy Fabiola Hernández-PérezIsmael Hernández-LucasHumberto Barrios-CamachoThe research aims to provide insights into the sources of contamination, prevalence of common serovars, determination of sequence types, prediction of genes associated with antimicrobial resistance, and phylogenetic analysis to evaluate genetic diversity and correlations between serovars and sequence types in Salmonella enterica in Mexico. We analyzed 818 publicly accessible whole-genome sequences from Mexico, which included isolates from diverse sources such as poultry, meat, water, and agricultural environments. We identified fifty-seven serovars, of which 19.8% corresponded to S. Infantis, 10.7% to S. Anatum, and 6.6% to S. Newport, representing the most common serovars. Phylogenetic analysis shows a strong correlation between sequence type and serovar. For example, ST32 for S. Infantis and ST64 for S. Anatum show this. However, serovars such as S. Newport possessed considerable genomic diversity, suggesting complex contamination pathways. The analysis showed that many isolates have been identified as multidrug-resistant, exhibiting resistance gene profiles for aminoglycosides, β-lactams, fluoroquinolones, sulfonamides, and tetracyclines. The findings emphasize the importance of identifying contamination sources to monitor the dissemination of multidrug-resistant Salmonella in regions that have significant antibiotic consumption in agriculture and farming, highlighting its global relevance for food safety and public health.https://doi.org/10.1371/journal.pone.0323872
spellingShingle Luis Lozano-Aguirre
Josefina Duran-Bedolla
Juan Téllez-Sosa
Cindy Fabiola Hernández-Pérez
Ismael Hernández-Lucas
Humberto Barrios-Camacho
Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
PLoS ONE
title Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
title_full Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
title_fullStr Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
title_full_unstemmed Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
title_short Genomic insights into the serovar prevalence, antimicrobial resistance gene, and genetic diversity of Salmonella enterica in Mexico.
title_sort genomic insights into the serovar prevalence antimicrobial resistance gene and genetic diversity of salmonella enterica in mexico
url https://doi.org/10.1371/journal.pone.0323872
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