This study is intended to study the source of abundant breeding mosquitoes. Physical characteristics of water, mosquitoes and disease in the area, the risk of dengue in a forest swamp Juan khreng. Khreng road, tambol Cha-UAT district, Nakhon SI thammarat. A random sample of the snow-ball 66 households from 11 villages of Tambon khreng by using a water ball mosquito surveys. Keep, for example, water ball, mosquito and recognize the type under the microscope. Analyze data using the average number of statistics per cent standard deviation. The index value of a child of water, mosquito (t-test) t-statistic value statistic value f (F-test)
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