Impact of COVID-19 on the prevalence of multi-drug-resistant bacteria: a literature review and meta-analysis.

The COVID-19 pandemic affected the global healthcare delivery system, raising concerns about its influence on antimicrobial resistance (AMR). This systematic review and meta-analysis assessed the impact of the COVID-19 pandemic on the prevalence of MDR bacteria in different healthcare environments. A systematic search was carried out in PubMed-MEDLINE, Embase, Web of Science, BIOSIS, Scopus, and Google Scholar for articles published from December 2019 to January 2024. After screening 77 full-text studies, 28 studies were included in the analysis. The inclusion criteria included original human studies presenting MDR bacteria incidence before and during/after COVID-19 with reference to Carbapenem-resistant Acinetobacter baumannii, Carbapenem-resistant Enterobacteriaceae, Vancomycin Resistant Enterococci, Carbapenem-Resistant Pseudomonas aeruginosa, Methicillin-resistant Staphylococcus aureus, and Extended-Spectrum Beta-Lactamase-producing Enterobacteriaceae. The overall odds ratio (OR = 0.91, 95% CI: 0.70-1.17) indicates no significant change in the prevalence of multidrug-resistant (MDR) bacterial infection between the pre-COVID-19 and the COVID-19 period. There was no significant change in the prevalence of MRSA, ESBL, and VRE pre- and post-COVID. However, there was a significant reduction in the prevalence of CR-Ab, CRE, and CRPA pre- and during/after-COVID-19. MDR prevalence was significantly increased in Asia (18%) while it decreased slightly in North America (10.3%), showing variations in antibiotic use. The findings show that COVID-19 has different effects on the prevalence of MDR bacteria across geographical regions and healthcare facilities.