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Within a large project for the socio-economic development of the rice growing area of the Rusizi valley in Burundi, a malarial control programme has been set up. This programme has several components: improvement of curative services, promotion of use of impregnated mosquito nets, and use of environmental engineering and indoor spraying with residual insecticides to control infection.
Coosemans et al. (Sun,) studied this question.