【摘要】 目的 对比分析北京市有接触史的严重急性呼吸综合征(SARS)患者与密切接触者流行病学的相关因素，为制定预防控制措施提供依据。方法 对西城区、海淀区、朝阳区86名有明确流行病学史的SARS患者及93名密切接触者进行问卷调查，通过单因素分析和非条件Logistic回归分析，了解影响SARS传播的流行病学因素。结果 经Logistic回归分析，是否去过医院，公共场所是否经常戴口罩，接触患者时是否通风良好是导致SARS传播的具有统计学意义的重要因素。结论 在SARS流行过程中，特别是在流行初期，医院内交叉感染是一个重要的流行环节，而改善通风条件，培养良好的卫生习惯如去公共场所时戴口罩等，可能是保护性因素，对控制SARS的传播起一定积极作用。

    Shang Mingyu，Yao Chonghua，Yang Xiaohui，et al.

    Beijing Anzhen Hospital，Affiliated to the Capital Medical University，Beijing100029.

    【Abstract】 Objective To compare the epidemiological factors between SARS with history and close-conˉtact.Methods 86probable cases of SARS with epidemiological history and93close-contact cases in Xicheng，Haidian and Chaoyang center for disease prevention and control were investigated.Monovariate analysis and non-conˉditional logistic regression were used to analyze.Results Whether having been to hospital，whether having had mask when going to public，whether having a good ventilation condition when close face-to face contacting with the patient of SARS are important factors for the transmission of SARS.Conclusion Nosocomical infection appeared to be a imˉportant factor of SARS epidemic ......