Effectiveness evaluation of insecticide spraying to control Of Aedes aegypti of local administration in Health Region 2

Abstract

The purpose of this study was to assess the effectiveness of insecticide spraying in the control Aedes mosquitoes of local administrative organizations (LAO) in Health Area 2, in 2020. This study was conducted by choosing villages with dengue fever outbreaks for five consecutive years. The efficacy of sprayers was assessed by observing and recording in the spraying form. The results showed 100% of the spraying team was employee position and 66.67% of them had more than five years of experience doing. The most of employees never had any training insecticide spraying. However they learnt from their mentors. Insecticide spraying skills were determined to functional, with the exception of the management of the residual chemicals sprayed in the container with proper technique (66.67%). Moreover, all staffs (100%) did not use appropriate self-protection equipment. The efficacy of insecticide spraying by using bioassay test has been evaluated in the following areas: Moo 6, Saen Tor Subdistrict, Nam Pat District, Uttaradit Province; Moo. 9 Nong Yang Toi Subdistrict, Si Thep District, Phetchabun Province; and Moo. 2, Mae Ramat Subdistrict, Mae Ramat District, Tak Province. At 24 hours, Aedes mosquitoes were observed to have a mortality rate of 98.89%, 60.00% and 99.20%, respectively. Suggesting that Uttaradit and Tak provinces were somewhat effective in spraying insecticides. Meanwhile, Phetchabun was unsuccessful. This could be because most of the houses were relatively exposes and there was not enough insecticide spraying. It was unable to switch off the insecticides, making it impossible to completely get rid of Aedes mosquitoes.