ArticlePloS one
Antibiotic resistance, virulence, and phylogenetic analysis of Escherichia coli strains isolated from free-living birds in human habitats.
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22 citing papers in PubMed, 37 citations in OpenAlex.
- Distribution and Co-Occurrence of Selected Virulence-Associated Genes inPathogens (Basel, Switzerland) · 2026Article
- Biodiversity of Genetic, Metabolic, and Antibiotic Resistance Profiles ofMicroorganisms · 2026Article
- Antibiotic Resistance and Virulence Genes in Escherichia coli from Wild Birds in a Peruvian Wetland.EcoHealth · 2026Article
- Antibiotic resistance patterns of Escherichia coli isolates in Passeriformes and non-Passeriformes: insights from migratory and resident avifauna.BMC veterinary research · 2026Article
- Evolution and rise of antimicrobial resistance in key public health bacteria within and across the One Health sectors.Future microbiology · 2026Review
- Predominance of antimicrobial resistance genes and high-risk clones among Gram negatives from clinical sources in Accra-Ghana.PloS one · 2026Article
- Virulence profiles and antibiotic resistance patterns ofOpen veterinary journal · 2025Article
- Presence of Microorganisms in the Environment: One Health Approach.Microorganisms · 2025Review
- High prevalence of multi-drug-resistant bacteria in faecal samples from UK passerine birds.Scientific reports · 2025Article
- Effectiveness of predatory bacteriumOpen veterinary journal · 2025Article
- Genetic Determinants and Biofilm Properties Useful in Estimation of UTI Pathogenicity of theAntibiotics (Basel, Switzerland) · 2025Article
- Antimicrobial-resistant genes in feces from otters (Heliyon · 2024Article
- Antimicrobial Resistance in DiverseAntibiotics (Basel, Switzerland) · 2024Review
- Biodiversity of microorganisms in the Baltic Sea: the power of novel methods in the identification of marine microbes.FEMS microbiology reviews · 2024Review
- Comprehensive Assessment of Multidrug-Resistant and Extraintestinal PathogenicMicroorganisms · 2024Article
- First Insights on Resistance and Virulence Potential ofAntibiotics (Basel, Switzerland) · 2024Article
- Anthropogenic contamination sources drive differences in antimicrobial-resistantApplied and environmental microbiology · 2024Article
- High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland.International journal of molecular sciences · 2023Article
- Article
- Antibiotic-ResistantVeterinary sciences · 2022Article
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Authors and funding
9 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Wild birds can be colonized by bacteria, which are often resistant to antibiotics and have various virulence profiles. The aim of this study was to analyze antibiotic resistance mechanisms and virulence profiles in relation to the phylogenetic group of E. coli strains that were isolated from the GI tract of wildfowl. Out of 241 faecal samples, presence of E. coli resistant to a cephalosporin (ESBL/AmpC) was estimated for 33 isolates (13,7%). Based on the analysis of the coexistence of 4 genes encoding ESBLs/AmpC (blaCTX-M, blaTEM, blaSHV, blaAmpC) and class 1 and 2 integrons genes (intI1, intI2) a subset of two resistance profiles was observed among the investigated E. coli isolates carrying blaAmpC, blaSHV, and blaCTX-M, blaTEM, class 1 and 2 integrons, respectively. The E. coli isolates were categorized into 4 phylogenetic groups A (39.4%), B2 (24.25%), D (24.25%) and B1 (12.1%). The pathogenic B2 and D groups were mainly typical for the Laridae family. Among the 28 virulence factors (Vfs) detected in pathogenic phylogenetic groups B2 and D, 7 were exclusively found in those groups (sfa, vat, tosA, tosB, hly, usp, cnf), while 4 VFs (fecA, fyuA, irp2, kspMTII) showed a statistically significant association (P≤0.05) with phylogroups A and B1. Our results indicated that strains belonging to commensal phylogroups A/B1 possess extensive iron acquisition systems (93,9%) and autotransporters (60,6%), typical for pathogens, hence we suggest that these strains evolve towards higher levels of virulence. This study, which is a point assessment of the virulence and drug resistance potential of wild birds, confirms the importance of taking wild birds as a reservoir of strains that pose a growing threat to humans. The E. coli analyzed in our study derive from different phylogenetic groups and possess an arsenal of antibiotic resistance genes and virulence factors that contribute to their ability to cause diseases.
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