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Distribution of extended-spectrum β-lactamase (ESβL)–producing Enterobacteriaceae among hospital- and community-acquired urinary tract infections (UTIs). All isolates were identified as Escherichia coli and Klebsiella spp.; E. coli was more frequently isolated than Klebsiella spp. among both hospital (P-value = 0.007) and community-acquired ESβL isolates (P-value = 0.001).
