疟疾是常见和多发的寄生虫病。据记载,世界上有143个国家存在疟疾,受疟疾威胁的人口有20.4亿(我国除外),年发疟人数2亿左右,死于疟疾的约1～2百万。我国三千年前已有疟疾记载。解放前估计疟疾流行县、市有1千余个,受威胁的人口有3亿5千万,年发病人数以千万计。足见疟疾对人 Malaria is a common and frequent parasitic disease. According to records, there are 143 countries in the world where malaria is present, and there are 2.40 billion people (except our own) threatened by malaria. The number of annual malaria cases is about 200 million and malaria deaths are about 1-2 million. There are already malaria records in our country three thousand years ago. Pre-liberation estimates of malaria epidemic counties and cities have more than a thousand, threatened population of 350 million, annual incidence of tens of millions. Malaria on the human face