ArticleFrontiers in cellular and infection microbiology2026
Bronchoscope: an important and easily overlooked vector of clinical infection with
Article in Frontiers in cellular and infection microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To investigate the role of bronchoscopes in a Pediatric Intensive Care Unit (PICU) carbapenem-resistant Methods: A CRKP infection outbreak in a PICU was investigated. Four CRKP strains were isolated from the bronchoalveolar lavage fluid of infected patients, and one CRKP strain was isolated from the shared bronchoscope used for these patients. Antimicrobial susceptibility testing was performed to determine the drug resistance profile of the strains. Genotypic analysis was conducted to detect the presence of antimicrobial resistance genes and virulence-associated genes. Average nucleotide identity (ANI) and sequence typing (ST) were used to assess the homology of the five isolated CRKP strains. Silver staining was adopted to compare the biofilm formation capabilities of the bronchoscope-isolated strain, patient-isolated strains and the standard control strain. Results: All 5 CRKP isolates were fully resistant to cephalosporins, carbapenems and other agents, but susceptible to levofloxacin, trimethoprim/sulfamethoxazole and tigecycline, and all carried Conclusion: Contaminated bronchoscopes are the transmission vector of this monoclonal CRKP outbreak in PICU. The enhanced biofilm-forming ability of ST1697 CRKP facilitates its persistence and transmission, highlighting the necessity of strict adherence to bronchoscope disinfection and quality control to prevent hospital-acquired infections.
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