1天花消灭情况天花是由天花病毒引起的一种致死性疾病。1980年,在开展了具有历史意义的全球监测和接种运动后,世界卫生大会宣布全球根除天花——目前唯一一种消灭的传染病。当1948年世界卫生组织(WHO)成立时,天花仍然在全球广泛流行,尽管努力防控,到20世纪60年代,全球仍然有33个国家流行天花,大多数为非洲亚撒哈拉国家、巴西和东南亚,每年病例数估计为1000 1 smallpox eliminate the case of smallpox is caused by a lethal disease. In 1980, following the historic global monitoring and vaccination campaign, the World Health Assembly announced the global eradication of smallpox - the only infectious disease to be eradicated. When the World Health Organization (WHO) was established in 1948, smallpox was still widespread in the world. Despite the efforts to prevent and control smallpox in 33 countries in the 1960s, most of which were in sub-Saharan Africa, Brazil and South-East Asia The annual number of cases is estimated at 1000