High burden and genetic diversity of β-lactamase-producing Escherichia coli and Klebsiella pneumoniae causing community-acquired urinary tract infections in Southeastern Gabon
Fig 1
Flow chart of urine sample screening and selection of priority pathogens.
A total of 3,026 urine samples were collected from outpatients or patients hospitalized for ≤48 hours. Of these, 1,786 samples yielded negative or contaminated cultures (≥3 organisms), and 291 showed non-significant bacteriuria (<10⁵ CFU/mL). Significant bacteriuria (≥10⁵ CFU/mL) was identified in 949 samples, which were clinically classified as cystitis (589 cases) or pyelonephritis (360 cases). Based on Global Antimicrobial Resistance Surveillance System (GLASS) criteria, 200 isolates were selected as priority pathogens for antimicrobial resistance surveillance in community-acquired urinary tract infections, comprising 124 E. coli and 76 K. pneumoniae isolates. CFU, colony-forming units; AMR, antimicrobial resistance; GLASS, Global Antimicrobial Resistance Surveillance System.