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邻居何阿姨的儿子小军正上高二,学习十分紧张,期末考试前夕突发高热、咳嗽、诊断为“麻疹”住进了医院。何阿姨心急如焚,一上班便找到我,说是儿子早已接种过麻疹疫苗,为什么这种幼儿时才得的病,又会在他儿子身上发生? 确实,在我国,年龄6个月至5岁的小儿麻疹的发病率最高(6个月内婴儿因从母体获得抗体故很少发病)。由于人群对麻疹普遍易感,因此易感者接触病人后90％以上会发病,病后有持久免疫力。但近年大量文献报道,成人麻疹有逐渐增多趋势,有的南方省份局部人口密集区甚至有爆发流行,所以成人麻疹并不罕见。医学专家研究后认为,成人麻疹发生原因可能为1、主动或被动免疫未获得成功,因而体内缺乏麻疹抗
Nephew aunt’s son is a sophomore on the sophomore, learning is very tense, the eve of the final exam high fever, cough, diagnosed as “measles” admitted to the hospital. What aunt worried, I find work on the go to work, said her son had already been vaccinated against measles, why the disease only when young children will happen to his son? Indeed, in our country, aged 6 months to 5 years of age The highest incidence of measles in children (6 months, the baby acquired antibodies from the mother so it is rarely onset). As the population is generally susceptible to measles, susceptible contacts with the patient after more than 90% of the disease, the disease has a lasting immunity. However, a large number of literatures reported in recent years show that there is a gradual increase of adult measles. Some even popularize in some densely populated southern provinces, so it is not uncommon for adult measles. Medical experts believe that the reasons for adult measles may be 1, the initiative or passive immunity was not successful, so the body lack of measles resistance