Genetic Detection of Extended-Spectrum -Lactamase-Containing Escherichia coli Isolates from Birds of Prey from Serra da Estrela Natural Reserve in Portugal (original) (raw)

This study investigates the presence of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli isolates in wild birds of prey at the Serra da Estrela Natural Reserve in Portugal. Fecal samples were analyzed to detect ESBL genes, specifically bla CTX-M-1 and bla SHV-5, alongside the phylogenetic classification of the isolates. Findings indicate a concerning prevalence of virulent ESBL-positive strains, particularly in the B2 phylogenetic group, potentially linked to environmental exposure to antibiotic-resistant bacteria.