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罗甸是我省疟疾的高发县之一,位于北纬52°′30′,东经106°40′,海拔295～1100米,有六个区,51个公社,1395个自然村寨,251,231人,是布依、苗等少数民族聚居的山区,主要种植水稻,人畜分居,畜圈多数简陋,少数楼上住人,楼下关牛;年平均温度19.6℃,平均相对湿度75％,年降雨最1200毫米左右。由于气温高,雨量充沛,河溪纵横,沟渠交错,给蚊媒孳生和疟疾传播造成良好的条件;主要疟区分布在海拔600米以下河谷山间盆地
Luodian is one of the high incidence counties of malaria in our province. It is located at 52 ° 30 ’north latitude, 106 ° 40’ east longitude and 295 to 1100 meters above sea level. There are six districts, 51 communes and 1395 villages, with 251,231 people Bouyei, Miao and other ethnic minorities living in mountainous areas, the main planting rice, separation of people and livestock, poultry most of the simple, a few upstairs living, downstairs Guanniu; annual average temperature of 19.6 ℃, the average relative humidity of 75%, annual rainfall of about 1200 mm . Due to the high temperature, abundant rainfall, criss-crossing streams and ditches, good conditions for mosquito breeding and malaria transmission were found. The main malaria endemic areas were located in the valley basin below 600 meters above sea level