Evaluation of the use of mosquito nets impregnated with long-lasting insecticide (milds) as a strategy to control malaria transmission and its implications in five states in the Brazilian Amazon

In the five states, a priority municipality was indicated by the partners who received mosquito nets impregnated with long-lasting insecticide (MILD) and where, logistically and structurally, it is possible to carry out the study activities. In each municipality, 3 collection points were chosen, in which collections will be carried out twice a year (about 15 days each) for the development of a methodology for the study of the biology of malaria transmission, involving adult and immature specimens and their habitats. As for the use of mosquito nets, a structured interview will be conducted with a person in charge of the house who received MILDs to find out what information was passed on and how much knowledge was absorbed (how and when to use it; washing and drying; use and conservation, etc.). A sample of mosquito nets will be checked for integrity and effectiveness (biological testing using the cone technique recommended by the WHO; colorimetric method for semi-quantitative detection of the insecticide in the mosquito net and spectrophotometry for quantitative detection of the insecticide and its products) . In all areas, houses that received mosquito nets, mosquito breeding sites, collection points, etc. will be georeferenced. In breeding sites close to the collection points, physical-chemical analyzes of water and soil will be performed, and in breeding and consumption water, analyzes of the presence of organic residues will be carried out. It is also intended to conduct informative/educational activities with the population on various aspects of malaria (importance of diagnosis and treatment; prevention; control tools and proper use of them).

Impact of Interventions

Mar 2020 — Mar 2023

Brazil