| Object To study Severe acute respiratory syndrome (SARS), preventive and control strategies. We analyse and describe the epidemiological process, epidemiological features, and control measures in an epidemic of Severe acute respiratory syndrome (SARS), which outbroke in Changchun City, from April to May in 2003.Methods data from the epidemiological investigating table of Ministry of Health P.R.China and other special investigation, to analyse and describe the epidemi- ological process of the outbreak. Results The epidemic of SARS struck Changchun for 29 days, a total of SARS cases had been identified. The major epidemic feature is importing. Arising from this index imported case, 30 other people were affected with SARS.32.36% of the confirmed cases were Medical staff, it because we knew little about SARS especially it's biological features, channel and medial of contagion, strong infectivity, and so on, and not took resolute and effective prevention measures at the early stage. There was an obvious concentration of case in family: 17 cases in three families. SARS case were mostly infected in hospital and family through airborne and close contact. The death rate of Changchun was 17.65%, higher than the average of China. The median of incubation period was 7 days. Investigations on 34 SARS cases made at 14 days,4 months and 9 months after they cured, suggested the cured SARS case hadn't have infectivity. Conclusion The transmission chains of this SARS outbreak in Changchun could clearly be depicted. The key of prevention and control the epidemic of SARS targeted contagion, transmission channel and health people. Prevention, control and cure of SARS need not only special staff but also social mobilization, the relative agencies cooperating harmoniously with each other, and adapting a series of complex measures.
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