Surveillance of bacterial resistance in Liuzhou Workers'Hospital,Guangxi from 2020 to 2022
10.16718/j.1009-7708.2025.02.012
- VernacularTitle:2020-2022年广西柳州市工人医院细菌耐药性监测
- Author:
Mengwei LI
1
;
Liuhua WEI
1
;
Guolan LUO
1
;
Hongzhen ZHU
1
;
Shengzhang LIN
1
;
Likun CHEN
1
;
Lijun JIANG
1
;
Haixia WANG
1
Author Information
1. 广西医科大学第四附属医院柳州市工人医院医学检验科,广西柳州 545005
- Publication Type:Journal Article
- Keywords:
antimicrobial resistance surveillance;
antimicrobial susceptibility testing;
matrix-assisted laser desorption/ionization time-of-flight mass spectrometry;
carbapenem-resistant organism;
antimicrobial agent
- From:
Chinese Journal of Infection and Chemotherapy
2025;25(2):195-202
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the changing profiles of antimicrobial susceptibility of the bacterial strains isolated from patients at Liuzhou Workers'Hospital in Guangxi from 2020 to 2022.Methods The bacteria were isolated,identified,and underwent antimicrobial susceptibility testing using VITEK 2 Compact,disk diffusion method,or E-test.The results were interpreted according to the breakpoints recommended by CLSI M100 32nd Edition in 2022.The data were analyzed using WHONET 5.6 software.Results A total of 26 254 nonduplicate strains were collected from 2020 to 2022,including Gram-positive bacteria(27.9％)and gram-negative bacteria(72.1％).The prevalence of methicillin-resistant strains was 20.0％in SS.aureus(MRSA),and 72.2％in coagulase-negative Staphylococcus(MRCNS).Methicillin-resistant staphylococcal strains were more resistant to most antimicrobial agents than methicillin-susceptible strains(MSSA and MSCNS).None of the staphylococcal strains was resistant to vancomycin,linezolid or tigecycline.Enterococcus faecium strains showed higher resistance rates to most antimicrobial agents than Enterococcus faecalis.None of enterococcal strains was resistant to vancomycin.A few enterococcal strains were resistant to linezolid.Overall,691 strains of the non-meningitis Streptococcus pneumoniae were isolated from children and 123 strains were isolated from adults.The prevalence of penicillin-resistant SS.pneumoniae(PRSP)was 0.4％in the strains from children and 1.6％in the strains from adults.None of S.pneumoniae strains was intermediate to penicillin.The prevalence of carbapenem-resistant Klebsiella pneumoniae(CRKpn)was 1.2％,1.2％,and 13.8％in 2020,2021,and 2022,respectively.The prevalence of carbapenem-resistant P.aeruginosa(CRPae)and carbapenem-resistant Acinetobacter baumannii(CRAba)was 10.7％and 68.4％in 2020,17.5％and 75.2％in 2021,14.3％and 77.3％in 2022,respectively.About 84.6％of the 1 269 strains of Haemophilus influenzae were isolated from children and 15.4％isolated from adults.The prevalence of beta-lactamase-producing strains was 39.4％in the isolates from children and 46.8％in the isolates from adults.The β-lactamase-producing H.influenzae was resistant to ampicillin.Furthermore,some β-lactamase-nonproducing ampicillin-resistant(BLNAR)H.influenzae strains(27.0％)were also identified.Conclusions Antimicrobial resistance is still serious in this hospital,especially high prevalence of carbapenem-resistant organisms(CRO).Hospital infection prevention and control measures,antibiotic stewardship,and proactive CRO screening should be strengthened.More clinical specimens should be collected for suspected infections.Antimicrobial treatment should be prescribed empirically in time and adjusted when the results of antimicrobial susceptibility testing are available.
