Mosquito bite prevention interventions
HDN
Two interventions were included in this evaluation. The first is a transfluthrin-based VPSR that was hung from the open structure’s eaves. For this evaluation, two units of this product were hung from two opposite sides of the open structure, per manufacturer’s instructions. Note, due to limited space in the chambers, the HDN structure was not placed over the open structure and was tested without the presence of the temporary shelter. Thus, the VPSR devices were hung from the HDN’s opposing poles supporting the outer net. As the product manufacturer recommends replacing the product once every 30 days, the product was replaced after two experimental blocks (of eight days) to minimize possible waning efficacy. The second intervention was etofenprox treated ranger uniforms (Eto R). The ranger uniforms were hand-treated with etofenprox at Kasetsart University according to the manufacturer’s instructions: the bottle was held 15–20 cm away from garment to allow spraying on fabric for a treatment level of 2.0 g/m