A questionnaire survey was conducted in Khuan Kreang Peat Lands, Kreang sub district, Cha-uat district Nakhon Si Thammarat province (located 8° 32' 16.5" N latitude and 99° 56' 50.7" E longitude) in May-June 2011, covering 11 villages of Kreang sub district (Figure 1). Three hundred households in these 11 villages were sampled by a systematic stratified random sampling technique. By a proportional allocation method, these 300 sample units were assigned to 11 villages that assigned as stratums. One person in the collected household was identified as a sample unit. Breeding places [5] were sampled both indoors and outdoors within 15 m of the houses. Temperature and pH of water in all breeding places were measured. Larval surveys were conducted in the study area using fishnets. All live mosquito larvae were collected in plastic bags, taken
6194