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目的 了解广东省局部地区流行的传染性非典型肺炎(infectious atypical pneumonia,IAP)的流行病学特征,为制定预防控制对策和措施提供科学依据。方法 采用统一的流行病学个案调查表对病例进行调查。利用EPI6.0软件分析IAP病例在广东省的流行过程、地区、时间、人群分布及聚集性等特征。结果 IAP在广东省的发病率为1.72/10万,病死率3.64％。发病主要集中在1月下旬到2月下旬(2月上旬达到高峰),占病例总数的61.88％。地区分布以经济发达、人口流动频繁的珠江三角洲地区为主,占病例总数的96.66％;患者以青壮年居多:医务人员是高发人群,占病例总数的24.9％;该病有明显的家庭和医院聚集,聚集性病例占37.1％。结论 IAP是一种呼吸道传染病,传染源是人,潜伏期1～12 d,中位数4d;通过短距离飞沫和密切接触传播;人群普遍易感,病例主要集中在经济发达、人口流动频繁的珠江三角洲地区。
Objective To understand the epidemiological characteristics of infectious atypical pneumonia (IAP) endemic in some areas of Guangdong and provide a scientific basis for making prevention and control measures and measures. Methods Uniform epidemiological case questionnaires were used to investigate the cases. EPI6.0 software was used to analyze the epidemiological, regional, time, population distribution and aggregation characteristics of IAP cases in Guangdong Province. Results The incidence of IAP in Guangdong Province was 1.72 / 100 000 and the case fatality rate was 3.64%. The incidence mainly concentrated in late January to late February (peaked in early February), accounting for 61.88% of the total number of cases. The distribution is mainly in the Pearl River Delta with developed economy and frequent population movements, accounting for 96.66% of the total number of cases. Most of the patients are young and middle aged: medical staffs are high incidence population, accounting for 24.9% of the total number of cases; there are obvious families and hospitals Aggregation, clustering cases accounted for 37.1%. Conclusion IAP is a respiratory infectious disease, the source of infection is human, the incubation period of 1 ~ 12 d, the median 4d; spread through short-distance droplets and close contact; crowd susceptible to the general case of the economically developed, frequent population movements The Pearl River Delta region.