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控制乙脑流行的第三个环节是接种疫苗,既有实际意义,又是切实可行的方法。因为灭蚊和控制乙脑病毒的扩散宿主——猪,都存在较大的困难,所以,对易感人群实行有效的预防接种,提高人群的免疫力,降低乙脑的发病率十分重要。 1943年以来,日本、前苏联、美国曾先后制造过死病毒疫苗,即将病毒接种子小鼠脑内待小鼠典型发病后取其脑子作为悬液,再杀死病毒作为疫苗。
The third part of controlling the epidemic of JE is vaccination, both practical and feasible. Because mosquito control and the spread of host JE virus - pigs, there are greater difficulties, therefore, effective vaccination of susceptible populations, improve the population’s immunity and reduce the incidence of Japanese encephalitis is very important. Since 1943, Japan, the former Soviet Union and the United States have successively manufactured the vaccine for the death virus, that is, the virus is inoculated into the brain of a mouse and then the brain is taken as a suspension after the typical onset of the disease. The virus is then killed as a vaccine.