Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
Volume 17, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/ijerph17155606
Keywords
Escherichia coli(E; coli); wild birds; rodents; multi-drug resistant (MDR); resistance genes; antimicrobial susceptibility testing; whole genome sequencing
Funding
- National Environment Agency, Singapore
- Nanyang Technological University, Singapore
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Antimicrobial resistance (AMR) inEscherichia coli(E. coli) poses a public health concern worldwide. Wild birds and rodents, due to their mobility, are potential vehicles for transmission of AMR bacteria to humans. Ninety-six wild birds' faecal samples and 135 rodents' droppings samples were collected and analysed in 2017. Forty-sixE. coliisolates from wild birds and rodents were subjected to AMR phenotypic and genotypic characterisation. The proportion ofE. coliisolates resistant to at least one of the antimicrobials tested from wild birds (80.8%) was significantly higher than that of isolates from rodents (40.0%). The proportion ofE. coliisolates resistant to each antimicrobial class for wild birds was 3.8% to 73.1% and that for rodents was 5.0% to 35.0%. Six out of 26E. coliisolates from wild birds (23.1%) and two out of 20 (10.0%) isolates from rodents were multi-drug resistant (MDR) strains. These MDRE. coliisolates were detected with various antimicrobial resistance genes such asbla(TEM-1B)andqnrS1and could be considered as part of the environmental resistome. Findings in this study suggested that wild birds and rodents could play a role in disseminating antimicrobial resistantE. coli, and this underscores the necessity of environment management and close monitoring on AMR bacteria in wild birds and rodents to prevent spreading of resistant organisms to other wildlife animals and humans.
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