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世界上,每年有1.1亿疟疾病例发生,其中9千万是在撒哈拉沙漠南部的非洲。据世界卫生组织(WHO)估计,每年有1～2百万人死于疟疾,而大多数是5岁以下儿童.也就是说,绝大多数病例发生在热带非洲,其疟疾传播十分严重,对儿童的威胁最大。因此,疟疾是当今世界最重要、传播最广泛的热带疾病之一。大约有14亿人生活在无疟或不采取任何特别措施疟疾可消失的地区,另外16亿人生活在通过防治已消灭疟疾且未再出现复燃的地区。最近十几年,世界上许多地区的疟疾形势出现恶化,有100个国家的20多亿人口生活在受疟疾威胁的
In the world, there are 110 million cases of malaria each year, of which 90 million are in sub-Saharan Africa. According to the World Health Organization (WHO), 1-2 million people die of malaria each year, most of whom are children under the age of 5. In other words, the vast majority of cases occur in tropical Africa where the spread of malaria is very serious. The biggest threat to children. Malaria is therefore one of the most important and widely spread tropical diseases in the world today. About 1.4 billion people live in areas where malaria can disappear without any special measures or malaria and the other 1.6 billion live in areas where the malaria has been eliminated and no further resurgence occurs. The malaria situation has deteriorated in many parts of the world in the last decade or so, with more than 2 billion people in 100 countries living under the threat of malaria