目的　总结香港特区严重急性呼吸系统综合征 (SARS)流行病学的调查结果与防治经验。方法　回顾SARS疫症在香港的爆发经过 ,收集有关资料 ,进行流行病学分析 ;介绍政府从公共卫生角度采取的一系列防疫的行政措施。结果　根据流行病学调查 ,该病潜伏期一般为 2～ 7d ,亦可长达十多日。SARS病毒的主要传播途径是经飞沫传播 ,即接触到患者分泌物的飞沫或污染的传病媒介。感染者多为医护人员及与患者有紧密接触者。采取控制疫情的措施包括 :第一、控制传染源 ,做到早发现、早诊断、早报告、早隔离和早治疗。第二、切断传播途径。第三、保护易感人群。第四、公布疫情资料。同时也配合其他措施 ,包括出入境检疫措施、与病人接触者的隔离措施、学校停课等 ,使得香港的SARS疫情日趋稳定。结论　防治传染病要制定宏观统筹的策略 ,进行有效的监察 ,发现疫情时应采取快速果断的防疫措施 Objective To summarize the survey results and prevention and treatment experience of the SARS epidemiology in Hong Kong SAR. Methods The SARS outbreak in Hong Kong was reviewed. Relevant information was collected for epidemiological analysis. A series of epidemic prevention measures taken by the government in public health were introduced. Results According to epidemiological investigation, the incubation period is generally 2 ~ 7d, but also up to more than 10 days. The main route of transmission of the SARS virus is through droplets, ie, droplets or contaminated vectors that come into contact with the patient’s secretions. Infected mostly medical staff and patients with close contact. Measures taken to control the outbreak include: First, to control the source of infection so that early detection, early diagnosis, early reporting, early isolation and early treatment. Second, cut off the route of transmission. Third, protect the susceptible population. Fourth, publish epidemic information. At the same time, other epidemic prevention and treatment measures, including quarantine inspection and quarantine measures, quarantine measures for contact with patients and suspension of schools, have been adopted to stabilize the epidemic of SARS in Hong Kong. Conclusion To prevent and control infectious diseases, we must formulate a macro-strategy for co-ordination and carry out effective surveillance. We should take rapid and decisive measures to prevent epidemics