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广泛使用麻疹疫苗以后,发病季节性特征发生了变化。为了解麻疹不同阶段的季节性及其特征,本文应用圆形分布法,对我县麻疹无疫苗接种(1961～1965年)、无计划接种(1971～1975年)、计划免疫(1981～1985年)和冷链运转(1990～1991年)四个不同阶段17年的发病资料进行了分析,现报告如下:资料来源和方法一、资料来源:长阳县1961～1991年麻疹发病分月统计资料。
After the widespread use of measles vaccine, seasonal changes have occurred. In order to understand the seasonality and characteristics of different stages of measles, this paper applied the circular distribution method to measles-free measles vaccination (1961-1965), unplanned vaccination (1971-1975), immunization (1981-1985) ) And cold chain operation (1990 ~ 1991) four different stages of 17-year incidence data were analyzed, are as follows: Source and methods of one, Source: Changyang County, 1961 ~ 1991 measles incidence monthly statistics.