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作者在老挝Keoudom地区一个水库周围进行了疟疾度量调查,其目的是确定该区疟疾的地方性流行,恶性疟原虫对氯喹和奎宁的体内敏感性和居民自发服用氯喹的范围。该区位于万象省北部距首都80km,大部分为有树林的低地;并拥有老挝最大的南俄河水库,覆盖面积420km~2,水库四周群山环绕,堤岸上有许多小村庄。1968～1971年建坝期间,许多日本、泰国和老挝工人都患过疟疾。疟疾度量调查于1989年8月在4个村庄进行,每个村庄居民受检率在39%～83%。
The authors conducted a malaria survey around a reservoir in Keoudom, Lao PDR to determine the malaria endemicity in the area, the in vivo susceptibility of chloroquine and quinine to Plasmodium falciparum and the range of spontaneous use of chloroquine by residents. The area is located in the northern part of Vientiane province 80km away from the capital, most of which is a lowland with woods. It also has the largest Namuhe reservoir in Laos covering 420km2. The reservoir is surrounded by mountains and has many small villages on the embankment. During the dam construction from 1968 to 1971, many Japanese, Thai and Lao workers were suffering from malaria. The malaria measurement survey was conducted in 4 villages in August 1989 and the check-in rate per resident in villages was between 39% and 83%.