受威胁人口 1994年有100个国家和地区不同程度地受到疟疾威胁。92个国家和地区有包括恶性疟在内的疟疾流行,8个国家仅有间日疟。 在这100个流行国家中,由于环境改变和流动人口的增加,受威胁人口有很大的可变性。据估计,1994年有23亿人口(占世界人口的41％)居住在受疟疾威胁的地区。 在许多无疟疾国家,传入或再传入疟疾 Threatened population In 1994, 100 countries and regions were threatened with varying degrees of malaria. Malaria is endemic in 92 countries and areas, including falciparum malaria, and there is only malaria in 8 countries. Among the 100 endemic countries, the number of threatened populations is highly variable due to environmental changes and the increase in floating population. It is estimated that in 1994, 2.3 billion people (41% of the world’s population) live in areas threatened by malaria. In many malaria-free countries, malaria is introduced or re-introduced