ORIGINAL RESEARCH article
Front. Microbiol.
Sec. Infectious Agents and Disease
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1571660
Genetic diversity of Bordetella bronchiseptica isolates obtained from primates
Provisionally accepted
- 1National Animal Disease Center, Agricultural Research Service (USDA), Ames, United States
- 2Division of Bacterial, Parasitic, and Allergenic Products, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland, United States
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Bordetella bronchiseptica is a highly contagious bacterial respiratory pathogen with a broad host range of wild and domesticated mammals that can cause a variety of clinical disease outcomes ranging from asymptomatic carriage to severe pneumonia. The goal of this study was to evaluate the genetic diversity of B. bronchiseptica isolates obtained from primates and evaluate the antimicrobial resistance harbored by these isolates. Two isolates were identified as belonging to B. bronchiseptica lineage II and thirteen isolates represented new sequence types within B. bronchiseptica lineage I clonal complex 6. The lineage II isolates harbored the lowest sequence identity observed across all genes evaluated and did not contain several well characterized virulence and fimbrial genes. Western blotting revealed no reactivity to a lineage II strain when using antibodies generated against Pertactin (PRN) from a lineage I-1 strain or antibodies generated against a domain of filamentous haemagglutinin (FHA) from a lineage I-1 strain. Isolates harbored variation within the wbm locus containing genes encoding for the expression of antigenically distinct O-antigen types and the cya operon was replaced by the ptp operon in several isolates, expanding the phylogenetic distribution of this operon replacement.Thirteen isolates exhibited phenotypic resistance to four antibiotic classes tested, however the Bordetella-specific β-lactamase was the only antimicrobial resistance gene identified.Collectively, the data in this report expands the known phylogenetic diversity and genetic variation of B. bronchiseptica isolates.
Keywords: Bordetella bronchiseptica, Whole-genome sequencing (WGS), Comparative genomics, virulence factor, Antimicrobial resistance (AMR), and primate
Received: 05 Feb 2025; Accepted: 29 May 2025.
Copyright: © 2025 Nicholson, Shore, Wang, Zimmerman and Merkel. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Tracy L Nicholson, National Animal Disease Center, Agricultural Research Service (USDA), Ames, United States
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