根据流脑流行１０年一周期的规律，预计我区１９８６年将出现流行高峰年，全区平均流行强度可达５０／１０万，但由于１９８５－１９８６年分别对１５岁以下儿童进行流脑菌苗普种，和以后每年对２．５岁以下儿童进行基础免疫，７岁年龄组加强等预防措施，全区流脑发病率和死亡率逐年大幅度下降，没有再出现流行高峰年。充分证明流脑周期性的流行是可以通过提高易感人群的免疫水平，形成免疫屏障，而达到控制流脑流行的目的，并取得显著的社会经济效益。 According to the prevalence of 10 years epidemic meningococci prevalence is expected in my district in 1986 will be the peak of the epidemic, the region’s average intensity of up to 50/10 million, but since 1985-1986, respectively, for children under the age of 15 meningitis In the future, the prevalence of meningococci and the mortality rate dropped drastically year by year. There was no recurrence of the epidemic peak year. It is fully demonstrated that the cyclical epidemic of meningitis can achieve the purpose of controlling the epidemic of meningococcal meningitis by improving the immunity level of the susceptible population and forming an immune barrier and achieve remarkable social and economic benefits.