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计划免疫工作的广泛开展,使脊髓灰质炎发病率连年下降,到1988年全国只发生667例,发病率为0.062/10万。但1989年以来我国许多省市又出现脊髓灰质炎的暴发流行.发病以4岁以下儿童为主。1988年4岁以下病例占总病例的99.59%,1989年占93.84%,1990年占93.10%。据不完全统计,按现行免疫程序有全程服苗史的病例1989年为9.2%,1990年占12.43%。1991年为20.42%,个别省达40%以上。这就向我们提出一个问题:TOPV 现行免疫程序是否完善,如何改进,值得研究。
The extensive immunization program has brought the incidence of poliomyelitis declining year by year. By 1988, only 667 cases had occurred in the country, with a prevalence of 0.062 / 100,000. However, polio outbreaks have emerged in many provinces and cities in our country since 1989. The incidence of these diseases is mainly among children under 4 years of age. In 1988, 99.59% of the cases were under 4 years of age, 93.84% of them in 1989 and 93.10% in 1990. According to incomplete statistics, according to the current immunization program, there are 9.2% of the cases with full service history in 1989 and 12.43% in 1990. 20.42% in 1991, more than 40% of individual provinces. This raises the question to us: Whether the current immunization program of TOPV is perfect and how to improve it deserves to be studied.