Nasal carriage and antimicrobial resistance of bacteria in health care workers in an intensive care unit / 中国感染控制杂志

ABSTRACT

Objective To evaluate nasal carriage and antimicrobial resistance of bacteria in health care workers (HCWs)in an intensive care unit (ICU),and provide basis for making prevention and control measures of health-care-associated infection(HAI).Methods From April 2014 to March 2015,nasal swabs from HCWs in ICU were collected,carriage and antimicrobial resistance of bacteria were detected.Results A total of 450 nasal swab speci-mens were taken,137 strains were isolated,isolation rate was 30.44%.There were no significant difference in na-sal carriage rates of bacteria in HCWs with different genders,ages,types of work,length of service,and education-al level (P >0.05);nasal carriage rates in HCWs at different seasons were significantly different (P <0.05 ).82 strains (59.85%)were gram-negative bacteria,the major were Klebsiella pneumoniae (21 .16%)and Enterobacter aerogenes (18.98%);55 strains (40.15% )were gram-positive bacteria,the major were Staphylococcus aureus (18.98%)and Staphylococcus epidermidis (15.33%).38 (27.74% )strains were multidrug-resistant strains. 7.69% (2/26)of Staphylococcus aureus were methicillin-resistant strains,3.45%(1/29)of Klebsiella pneumoniae and 3.85%(1/26)of Enterobacter aerogenes were imipenem-resistant strains.Conclusion Nasal carriage rate of bac-teria and detection rate of multidrug-resistant organisms in HCWs in ICU is high.