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为了解本市经登革热(DF)流行后旧疫区和非疫区人群的免疫状况,更好地掌握疫情动态和人群中免疫水平变化,做好疫情监测,进一步探讨DF的流行规律。我们于1981年3～11月对旧疫区和非疫区的健康人群作登革血球凝集抑制试验(HI)以调查人群的血清抗体水平。现将结果报告如下: 材料与方法 (一)材料来源: 1.血清标本:旧疫区的健康人群血样于
In order to better understand the epidemic situation and the changes of immune status in the population, the epidemic situation should be well monitored and the prevalence of DF should be further explored in order to understand the immune status of people in the old and non-infected areas after the dengue fever (DF) epidemic in the city. We conducted a dengue haemagglutination inhibition test (HI) on healthy people in old and non-infected areas from March to November 1981 to investigate serum antibody levels in the population. The results are reported as follows: Materials and methods (a) Source of material: 1. Serological samples: the old population of healthy people in the blood sample at