ArticleFrontiers in microbiology2026
Antibiotic resistance characteristics, molecular typing, and potential transmission reservoirs of methicillin-resistant
Article in Frontiers in 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: The study aimed to assess the antibiotic resistance characteristics and molecular typing of methicillin-resistant Methods: Infectious specimens were collected from patients with postoperative infection in the Department of Hand and Foot Surgery at a hospital in Shenyang, China between June 2021 and June 2022. Nasal swab samples were obtained from healthcare workers, patients' family members, and cleaning staff, and environmental samples were collected from hospital wards. Bacterial identification was performed using a mass spectrometer, and antibiotic susceptibility testing was conducted using the VITEK2-Compact automated bacterial analyzer. Molecular typing was performed Results: Among 1,161 nasal swab samples, 25 MRSA strains were detected, giving a detection rate of 2.24%. One MRSA isolate was found in 77 environmental samples. Twenty-nine MRSA strains were identified in 406 postoperative infectious specimens, primarily from wound secretions and pus. Nasal swab-derived MRSA exhibited 100% resistance to benzylpenicillin and oxacillin; greater than 80% resistance to erythromycin and clindamycin; and 100% sensitivity to vancomycin, ceftaroline, and tigecycline. MRSA from infectious specimens exhibited a resistance rate of 86.21% to erythromycin and clindamycin. Conclusion: This study identified the molecular typing, antibiotic resistance characteristics, and clonal overlaps suggesting potential transmission reservoirs of MRSA in the Department of Hand and Foot Surgery, providing important guidance for clinical treatment and hospital infection control.
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