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无效接种即在计划免疫工作中实施了部分或全部操作过程,由于种种因素的影响而没有产生相应免疫效果的接种。无效接种导致了部分地区“双高现象”’(即接种率高、相应传染病发病率也高)的产生,降低了预防接种在群众中的信誉,干扰了计划免疫工作的顺利开展和我国1995年消灭小儿麻痹目标的实现。无效接种现象产生的原因一般可归纳为以下几个方面。 1.生物制品在贮运过程中承受温度过高或过低,特别是在接种现场暴露时间过长,造成疫苗效价降低或消失;或者接种场所选择不当,如在阳光直射下进行预防接种,阳光中的紫外线对活疫苗产生杀灭作用。这种情况接种疫苗,接种后机体难以产生有效的
Invalid vaccination that is part or all of the operation in the planned immunization work, due to the impact of various factors did not produce the corresponding vaccination effect. Invalid vaccination led to the “double high phenomenon” in some areas (that is, the high vaccination rate and the corresponding high incidence of infectious diseases), reducing the credibility of vaccination among the masses and interfering with the smooth implementation of planned immunization work and our country 1995 Year to eliminate the realization of the goal of polio. Invalid vaccination phenomenon can generally be summarized as the following aspects. 1. Biological products in the process of storage to withstand the temperature is too high or too low, especially in the vaccination site exposure time is too long, resulting in reduced or disappeared vaccine potency; or inappropriate choice of vaccination sites, such as vaccination in the sun, Ultraviolet light in the sun has a killing effect on live vaccines. Vaccination in this case, the body after vaccination is difficult to produce effective