Surveillance on clinical distribution and antibiotic resistance of Staphylococcus haemolyticus.

[Objectives] To investigate the clinical distribution and antibiotic resistance of s.haemolyticus so as to offer reasonable evidence for antibiotic therapy. [Methods] S.haemolyticus strains were isolated from infection patients. The identification and bacterial susceptibility test were analyzed by BD Phoenix100 system. MRS strains were identified by cefoxitin disk diffusion method. And the resistant phenotypes were determined with erythromycin and clindamycin discs using the D test method. [Results] From 116 SH strains,98 MRS strains were isolated and accounted for 84.5%. MRS samples were mainly prostate fluid for outpatient clinic whereas sputum and urine for inpatient department. MRS strains had multiple resistance to antibiotics,whereas sensitive to vancomycin,furadantin,linezolid totally (100%). The resistant rates to quinupristin / dalfopristin and rifampin were 1.0% and 17.3% respectively. However most of MRS strains were resistant to other antibiotics. Of the 40 strains resistant to erythromycin but susceptible to clindamycin,11 strains (27.5%) showed the positive by D test method. [Conclusion] SH strains are the mainly pathogens and have multiple resistance to antibiotics. We should pay much attention to detecting MRS and determined it using the D test method. Afterward,doctors use antibiotics reasonably and effectively depending on the results of bacterial susceptibility test.