目的:了解乳腺癌根治术后切口感染聚集性病例的情况，并调查原因。方法:对嘉兴市某三级医院2017年9月17日至10月16日乳腺癌根治术后发生的6例手术部位感染患者进行流行病学调查、细菌鉴定与药敏试验、环境卫生学监测。结果:该院在1个月内出现6例乳腺癌根治术后手术部位感染患者，其中5例切口分泌物培养结果为金黄色葡萄球菌，但是药敏谱不一致；6例患者均为同一个医生进行的手术。环境卫生学监测样本未监测到金黄色葡萄球菌。结论:本次感染聚集事件发生的原因可能与手术医生手部定植的金黄色葡萄球菌有关。“,”Objective:To understand the epidemiological characteristics of clustered cases with surgical site infection after radical mastectomy, and investigate the causes.Methods:An epidemiological investigation was performed on 6 patients with surgical site infections after radical mastectomy from September 17 to October 16, 2017 in a tertiary hospital in Jiaxing. Bacterial identification, drug sensitivity test and environmental hygiene monitoring were also conducted.Results:In one month, 6 patients with postoperative infection after radical mastectomy were found in this hospital. Five patients had n Staphylococcus aureus infections by bacterial culture of incision secretion, and the drug sensitivity spectrum was inconsistent. All patients with incision infection underwent surgery by the same doctor. No n Staphylococcus aureus was detected in environmental hygiene monitoring samples.n Conclusions:The cause of the infection may be related to the n Staphylococcus aureus colonizated in the hands of the surgeons.n