疟疾是最严重的昆虫传播疾病。全世界每年有3～5亿起疟疾临床病例,导致每年有200万人死亡(每30秒1人),其中90%以上发生在非洲撒哈拉沙漠以南地区。90%以上感染者是5岁以下儿童。这种疾病对贫穷家庭造成的经济影响更 Malaria is the most serious insect-borne disease. There are between 350 and 500 million clinical cases of malaria each year in the world, resulting in 2 million deaths every year (1 person every 30 seconds), of which over 90% occur in sub-Saharan Africa. More than 90% of those infected are children under 5 years of age. The economic impact of this disease on poor families is even greater