江苏省六合县属南京市郊县,共有26个乡镇,437个行政村,66万余人,总面积2500km~2。地形自南向北逐步升高,南部多河网,地势较平坦;中部为平原,东西北部多起伏山丘。多年来,恶性疟在我县西北丘陵地带反复出现,而且间日疟发病率 Luhe County, Jiangsu Province, is a suburb of Nanjing, a total of 26 towns, 437 administrative villages, more than 660,000 people, with a total area of ​​2500km ~ 2. Terrain gradually increased from south to north, the southern multi-river network, the terrain is relatively flat; the middle of the plains, north-east up and down the hills. Over the years, falciparum malaria has repeatedly appeared in the hilly areas of northwest China, and the incidence of vivax malaria