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초록

Wild birds and especially migratory species can become long-distance vectors for a
wide range of microorganisms. This study was performed to investigate the presence
and antimicrobial resistance of Escherichia coli isolated from the feces of wild birds in
Seoul. We isolated 165(50.8%) E. coli strains from 325 wild bird feces samples in
Seoul. Twenty-three percent were multiplex PCR positive for irp2 and fyuA genes.
Nineteen(11.5%) among the 165 E. coli isolates belonged to O78. We also tested the
bacteria for their susceptibility to 16 antibiotics using the disk diffusion method. The
majority of isolates were highly resistant to cephalothin(98.2%), ceftiofur(92.7%), ampicillin
(89.7%), and neomycin(83.6%). In addition, 123 E. coli isolates were resistant to
neomycin(96.7%), cephalothin(95.1%), apramycin(86.2%), and ceftiofur(85.4%). In this
study, the detection rates of E. coli and enterococci were high in the feces of wild
birds and the isolates showed high antibiotic resistance rates. Consequently, wild birds
might constitute a potential hazard to human and animal health by transmitting
multi-resistant strains to waterways and other environmental sources via their feces.
Wild birds and especially migratory species can become long-distance vectors for a
wide range of microorganisms. This study was performed to investigate the presence
and antimicrobial resistance of Escherichia coli isolated from the feces of wild birds in
Seoul. We isolated 165(50.8%) E. coli strains from 325 wild bird feces samples in
Seoul. Twenty-three percent were multiplex PCR positive for irp2 and fyuA genes.
Nineteen(11.5%) among the 165 E. coli isolates belonged to O78. We also tested the
bacteria for their susceptibility to 16 antibiotics using the disk diffusion method. The
majority of isolates were highly resistant to cephalothin(98.2%), ceftiofur(92.7%), ampicillin
(89.7%), and neomycin(83.6%). In addition, 123 E. coli isolates were resistant to
neomycin(96.7%), cephalothin(95.1%), apramycin(86.2%), and ceftiofur(85.4%). In this
study, the detection rates of E. coli and enterococci were high in the feces of wild
birds and the isolates showed high antibiotic resistance rates. Consequently, wild birds
might constitute a potential hazard to human and animal health by transmitting
multi-resistant strains to waterways and other environmental sources via their feces.