继天花在全球消灭后,世界卫生组织又提出了在本世纪内在金世界范围内控制脊髓灰质炎(以下简称脊灰),并不放弃消灭它的最终目标。自50年代中期研制成灭活疫苗和减毒潘疫苗以来,在大规模开展疫苗接种的国家,此病发病率明显下降,有些国家已无病例,但有的国家和地区多年后又发生暴发流行。如芬兰已有20年没有病例,但在1984年由Ⅲ型脊髓灰质炎病毒引起流行。又如我国台湾省自 Following the elimination of smallpox in the world, the World Health Organization has proposed to control poliomyelitis in the world within this century (hereinafter referred to as polio) and will not abandon its ultimate goal of eliminating it. Since the development of inactivated vaccine and attenuated pan vaccine in the mid-1950s, the incidence of this disease has dropped significantly in countries where vaccination is conducted on a large scale. In some countries, there are no cases yet, but outbreaks have occurred in some countries and regions after many years . For example, Finland has had no cases for 20 years, but was caused by Type III poliovirus in 1984. Another example is my self in Taiwan Province