ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]2025
Impact of COVID-19 pandemic on antimicrobial resistance of Proteus mirabilis in a Brazilian hospital.
Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- The agroenvironmental-clinical link of Proteus mirabilis: Genomic epidemiology, clonal relationships, and shared resistance and virulence profiles.Folia microbiologica · 2026Article
- Trends in mortality, pathogen distribution, and antimicrobial resistance of peritoneal and intra-abdominal infections from 1990 to 2021: a cross-sectional analysis of the MICROBE database.International journal of surgery (London, England) · 2025Article
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9 authors.
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Abstract
This study analyzes the resistance and virulence profiles of Proteus mirabilis isolates obtained from patients admitted to the University Hospital of Londrina, Paraná, between 2019 and 2022. We evaluated the antimicrobial resistance phenotypes, genes associated with resistance, biofilm formation through a phenotypic assay, and the presence of specific virulence genes. When comparing the "pre-pandemic" (2019) and "pandemic" (2020-2022) periods, we observed an increase in resistance rates to all tested antimicrobials. Multidrug-resistant (MDR) pathogens producing extended-spectrum β-lactamase (ESBL) phenotypes were isolated in both periods, but their occurrence was significantly higher during the pandemic. We also observed an increase in the frequency of nearly all studied resistance genes. The virulence profiles remained largely unchanged. Analysis of patients' clinical and demographic data revealed that those hospitalized during the pandemic were older, required longer hospital stays, and had a higher usage of invasive devices. These findings suggest that the recent COVID-19 pandemic has impacted the antimicrobial resistance of P. mirabilis, a bacterium of significant clinical interest associated with urinary tract infections (UTIs) and healthcare-associated infections (HAIs).
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