摘要:Objective To investigate the molecular epidemiology of Staphylococcus aureus in Yanbian area .Methods From March 2011 to June 2012 ,a total of 101 consecutive and non-duplicate strains of Staphylococcus aureus were collected from Yanbian Hospital .Genotypes of SCCmec ,spa,and multilocus sequence typing (MLST) were determined by PCR combined with DNA sequencing analysis .The pvl gene was detected by PCR .Results The most prevalent SCCmec type was type II (65 .0% ,39/60) ,followed by SCCmec type III (26 .7% ,16/60) .A total of 11 Spa types were identified for the MRSA strains ,including t2460 (55 .0% ,33/60) ,t030 (18 .3% ,11/60) ,t002 ,t324 ,and t632 (5 .0% ,3/60 each) .A total of 29 Spa types were identified for MSSA strains ,including t796 (14 .6% ,6/41) ,t309 (9 .8% ,4/41) ,and t126 (7 .3% ,3/41) . The pvl gene was identified in 5 stains .MRSA strains were classified into three types based on multilocus sequence typing (MLST) ,namely ST5 ,ST239 and ST72 .MLST-based MSSA types were more diverse ,including ST5 ,ST 25 ,ST 15 ,ST 59 ,ST 1 ,ST 7 ,ST 45 ,ST 22 ,and ST 188 .Conclusions ST5-MRSA-SCCmecII-t2460 and ST239-MRSA-SCCmecIII-t030 are the most prevalent MRSA clones in Yanbian area .Multiple prevalent MSSA clones are identified.%目的:研究我国延边地区金黄色葡萄球菌(金葡菌)的分子流行病学特点。方法收集2011年3月-2012年6月吉林省延边大学附属医院连续分离的金葡菌非重复株101株,通过PCR联合测序进行葡萄球菌染色体mec(SCC mec)分型、葡萄球菌A蛋白(spa)分型、多位点序列分型(MLST)并进行 pvl基因检测。结果 SCCmec分型:以Ⅱ型为主(39/60;65.0%),其次是Ⅲ型(16/60;26.7%);spa分型:甲氧西林耐药金葡菌(MRSA)有11种,其中 t2460为33株(55.0%),t030为11株(18.3%),t002、t324、t632均为3株(5.0%)。甲氧西林敏感金葡菌(MSSA)共分出29种不同的型:t796为6株(14.6%), t309为4株(9.8%),t126为3株(7.3%);共检出 pvl基因阳性5株;MLST检测:MRSA共有3种分型,ST5,ST239,ST72。MSSA分型具有多样性:ST5,ST 25,ST 15,ST 59,ST 1,ST 7,ST 45,ST 22,ST 188。结论延边地区MRSA的主要克隆株为ST5-MRSA-SCCmecII-t2460和ST239-MRSA-SCCmecIII-t030,MSSA显示多克隆性。