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为摸清个旧市各民族甲型肝炎的感染情况,探讨流行规律,指导预防工作,我们于1989年12月～1990年12月对个旧市3个主要民族的自然人群进行了HAV 感染的血清流行病学调查。现将结果报告如下。1 材料与方法1.1 调查点及人群的选择为保证样本代表性、根据该市地理环境分坝区及山区的特征及人群经济、文化、生活、卫生水平的差别,在坝区及山区抽取3个主要民族1095人作为调查对象。调查地点为自该市1952年建立疫情报告制度以来均无病毒性肝炎暴发记载,发病呈
In order to find out the infection status of Hepatitis A in Gejiu City, discuss the epidemic rules and guide the prevention work, we conducted a serogroup HAV infection of the natural population of 3 major ethnic groups in Gejiu City from December 1989 to December 1990 Surveying. The results reported below. 1 Materials and Methods 1.1 Survey Point and Crowd Selection In order to ensure the representativeness of the samples, according to the characteristics of the dam area and the mountainous area in the city’s geographical environment and the differences in population’s economic, cultural, living and hygienic levels, three 1095 main ethnic groups as survey subjects. The investigation site was free of viral hepatitis outbreak since the establishment of the epidemic reporting system in 1952 in the city. The incidence was