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综合推行肝炎防治措施的日本厚生省肝炎研究联络协会决定:从1988年起集中全力把甲型、乙型、非甲非乙型三种病毒性肝炎的研究课题缩减为对非甲非乙型肝炎的研究。在日本被称为“第二国民病”的病毒性肝炎,随着公共卫生的普及和对献血后抗体检查的推行,患者数比过去有大幅度减少。尽管这样,甲型、乙型、非甲非乙型三种肝炎,一年中仍有35万人发病,其中病原结构尚未清楚的非甲非乙型病毒肝炎最多,患者达15万人之多。近年来,防治肝炎的重点放在“甲型疫苗的开发”,
Japan’s Ministry of Health, Welfare and Hepatitis Research and Liaison Association, which promotes the prevention and control of hepatitis in a comprehensive manner, has decided to concentrate its efforts on reducing the research topics of hepatitis A, B and non-B hepatitis virus to those of non-A, non-B hepatitis the study. Viral hepatitis, known as “second national disease” in Japan, has seen a drastic reduction in the number of patients as the spread of public health and the implementation of post-donation antibody tests. In spite of this, there are still 350,000 cases of hepatitis A, B and non-B hepatitis, of which the most notable pathogens are non-A, non-B hepatitis and up to 150,000 . In recent years, prevention and treatment of hepatitis has focused on “the development of a type A vaccine”