characterization and comparison of extended-spectrum β-lactamase (esbl) resistance genotypes and population structure of escherichia coli isolated from franklin's gulls (leucophaeus pipixcan) and humans in chile.we investigated the general level of antibiotic resistance with further analysis of extended-spectrum beta-lactamase (esbl) prevalence, as well as the population structure of e. coli in fecal flora of humans and franklin's gulls (leucophaeus pipixcan) in central parts of chile. we found a surprisingly high carriage rate of esbl-producing e. coli among the gulls 112/372 (30.1%) as compared to the human population 6/49 (12.2%.) several of the e. coli sequence types (sts) identified in birds have p ...201324098774
molecular characterization and genetic diversity of esbl-producing escherichia coli colonizing the migratory franklin's gulls (leucophaeus pipixcan) in antofagasta, north of chile.the role of wild animals, particularly migratory birds, in the dissemination of antibiotic-resistant bacteria between geographically distant ecosystems is usually underestimated. the aim of this work was to characterize the escherichia coli population from franklin's gull feces, focusing on the extended-spectrum β-lactamase (esbl)-producing strains. in the summer of 2011, 124 fecal swabs from seagulls (1 of each) migrating from the united states and canada to the coast of antofagasta, north of c ...201525313843
comparison of extended-spectrum β-lactamase (esbl) ctx-m genotypes in franklin gulls from canada and chile.migratory birds have been suggested to contribute to long-distance dispersal of antimicrobial resistant bacteria, but tests of this hypothesis are lacking. in this study we determined resistance profiles and genotypes of esbl-producing bacteria in randomly selected escherichia coli from franklin´s gulls (leucophaeus pipixcan) at breeding sites in canada and compared with similar data from the gulls' wintering grounds in chile. resistant e. coli phenotypes were common, most notably to ampicillin ...201526496629
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