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Analysis of resistance of main gram-positive cocci to antibiotic

Xu Yuanhong,Wang Zhongxin,Fang Youbing (Clinical Laboratory of The 1st Affiliated Hospital, Anhui Medical University,Hefei 230022)  
Objective To investigate the resistance of main gram positive cocci in our area. Methods Antibiotic susceptibility of bacter ia was detected by microdilution. Methicillin resistant Staphylococcus was detec ted by agar dilution with 6 mg/L Oxacillin. High level aminoglycoside resistant Entercocci was detected by agar dilution with 500 mg/L Gentamicin. Resul ts Susceptibility of Vancomycin was 100% in Staphylococcus aureus and coa gulase negative Staphylococcus, and 98% in Entercocci. Susceptibility of Rifamp in and Timethoprin/Sufamethoxazole was higher than other antibiotics in Staphyl ococcus. The rate of MRSA,MRSCON and HLAR was 36 3%,30 6% and 55 4% respectiv ely. Conclusion Vancomycin is the first choice antibiotic in trea ting infectious diseases caused by Staphylococcus including Methicillin resista nt Staphylococcus aureus and Methicillin resistant coagulase negative Staphylococci. Allied treatment shal l be used for Enterococci.
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