Abstract:
OBJECTIVE To investigate the changes of isolation rates of multidrug-resistant organisms (MDROs) in Shaanxi Province from 2014 to 2023 so as to provide theoretical bases for prevention, control and surveillance of drug-resistant organisms.
METHODS The data of MDROs that were detected by the networked units of Shaanxi Antimicrobial Resistance Surveillance System in 10 years from 2014 to 2023 were analyzed by WHONET 5.6 software and were compared with the national average levels.
RESULTS The isolation rates of MDROs generally showed downward trends from 2014 to 2023 (all P < 0.05). The isolation rate of methicillin-resistant Staphylococcus aureus (MRSA) dropped from 45.7% to 35.8%, and that of methicillin-resistant coagulase-negative Staphylococcus (MRCNS) decreased from 81.8% to 75.8%, higher than the national average levels. The isolation rate of vancomycin-resistant Enterococcus faecium (VREfm) dropped from 3.1% to 0.5%, and that of vancomycin-resistant Enterococcus faecalis (VREfa) declined from 1.7% to 0, equal to or slightly lower than the national average levels. Among the Streptococcus pneumoniae strains, the isolation rate of erythromycin-resistant S. pneumoniae (ERSP) was higher than that of the penicillin-resistant S. pneumoniae (PRSP), the isolation rate of PRSP showed a downward trend (from 8.0% to 0.8%), while the isolation rate of ERSP rose slightly (from 96.2% to 98%), slightly higher than the national average levels. The isolation rate of carbapenem-resistant Escherichia coli (CR-ECO) showed a downward trend (from 2.3% to 1.0%), the isolation rate of carbapenem-resistant Klebsiella pneumoniae (CR-KPN) fluctuated and showed slightly rising trend (from 6.1% to 8.2%), slightly lower than the national average levels. The isolation rates of carbapenem-resistant Acinetobacter baumannii (CR-ABA) and carbapenem-resistant Pseudomonas aeruginosa (CR-PAE) strains showed downward trends (with CR-ABA decreasing from 66.2% to 60.3%, CR-PAE declining from 32.6% to 19.7%), slightly higher than the national average levels.
CONCLUSIONS The isolation rates of the MDROs showed downward trends in Shaanxi Province from 2014 to 2023 except for ERSP and CRKP. The isolation rates of VRE and CRE are lower than the national average levels, while the isolation rates of other MDROs are slightly higher than the national average levels.