Epidemiology of and risk factors associated with third-generation cephalosporin-resistant Escherichia coli carriage in children: A comparison between regions in Taiwan

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BACKGROUND: The increasing prevalence of antimicrobial-resistant Escherichia coli (E. coli) in the community is a global public health challenge. This study investigated the prevalence of third-generation cephalosporin-resistant (3GCR) E. coli fecal carriage in children, identified associated risk factors, and determined antimicrobial resistance patterns of E. coli across three regions of Taiwan. METHODS: Stool samples from children aged 0-18 years were collected in southern, northern, and eastern Taiwan from community or outpatient clinics between July 2022 and May 2023. E. coli colonies were selected and examined for antimicrobial susceptibility and multilocus sequence typing. Participant demographic data and potential risk factors for carrying resistant E. coli were surveyed using a questionnaire. RESULTS: Of the 246 children surveyed, 59.3% carried multidrug-resistant (MDR) E. coli, and 37.4% carried 3GCR E. coli. The prevalence of 3GCR E. coli carriage was highest in southern Taiwan (42.7%), followed by northern Taiwan (35.5%) and eastern Taiwan (28.4%). The study identified several risk factors which may be associated with the fecal carriage of 3GCR E. coli, such as having lower paternal education levels, being overweight or obese, having a nonvegetarian diet, and consuming eggs, with variations observed across regions. CONCLUSION: This study documented elevated fecal carriage rates of 3GCR and MDR E. coli across regions of Taiwan. The study also identified numerous demographic and environmental factors that require implementing comprehensive strategies to address this public health challenge.

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