Surveillance of antimicrobial resistance in the clinical isolates from Children's Hospital of Chuzhou during 2014 / 中国感染与化疗杂志

ABSTRACT

Objective To investigate the distribution and antimicrobial resistance of the clinical isolates from Children's Hospital of Chuzhou during 2014.Methods A retrospective analysis was conducted with the bacterial strains isolated from various clinical specimens in 2014.Results A total of 382 clinical isolates were collected during 2014, of which gram positive organisms and gram negative organisms accounted for 37.4 % and 62.6 %, respectively. The top 5 most frequently isolated microorganisms were E. coli (18.8 %),K. pneumoniae (16.8 %), coagulase negative Staphylococcus (13.1 %),S. pneumoniae (9.4 %) and S. aureus (9.2 %). The prevalence of MRSA was 28.6 % in S. aureus and the prevalence of MRCNS was 76 % in CNS. All staphylococcal strains were susceptible to daptomycin, linezolid and vancomycin. All the E. faecalis and E. faecium isolates were sensitive to daptomycin, linezolid and vancomycin. All the S. pneumoniae strains were susceptible to penicillin. The prevalence of extended spectrum-lactamases (ESBLs) positive strains was 58.3 % in E. coli and 28.1 % in K. pneumoniae. The Enterobacteriaceae strains were highly sensitive to carbapenems. Only 3 (1.6 %) carbapenem-resistant strains were identified in the Enterobacteriaceae isolates. About 13.3 % and 6.7 % of theP. aeruginosa isolates were resistant to piperacillin and levofloxacin, respectively. All the P. aeruginosa strains were sensitive to the other antimicrobial agents. The percentage of carbapenem-resistantAcinetobacter strains was lower than 10 %. Only one carbapenem-resistant A. baumannii strain was identified.Conclusions Gram negative microorganisms account for most part of the clinical bacterial isolates in 2014. The antimicrobial resistance is still very serious in this hospital, especially the emergence of carbapenem-resistant Enterobacteriaceae, which is of great concern.