在世界卫生组织计划消灭天花取得现今的经验之前,我想“能否消灭百日咳”?这个问题确实不好提出来。人们有计划地从地球上消灭一种流行病,倒如消灭天花的历史便是一个光辉的典范。当1967年计划开始之时,天花还是30个国家的地方性流行病,但现在各大洲已把它扫光。在西半球最后一例是1971年4月19日巴西的报告。世界上发病地区不断缩小,直至1974年报告病 Before the World Health Organization plans to eradicate smallpox to gain current experience, I would like to “make it possible to eliminate whooping cough.” This is a really bad question. It is a brilliant example that people systematically eliminate a pandemic from the earth, such as eliminating the history of smallpox. When the 1967 plan began, smallpox was also a endemic pandemic in 30 countries, but it has now been swept away by all continents. The last case in the Western Hemisphere is the Brazilian report of 19 April 1971. The incidence of disease in the world continues to shrink until the disease was reported in 1974