title: Simulium spp. control program in Rio Grande do Sul, Brazil.
abstract: Insects of the Simuliidae family have been the object of control in Rio Grande do Sul since the 70s. Their constant attacks became a social-economical problem as well as a problem of Public Health, with serious consequences to men and to the economy of the areas in which the insects develop. At first, the control was done with a chemical larvicide Themephos ABATE 500 E, but an imperfect measuring of outflow to determine the quantity of the product made Simulium spp. resistant to it. From 1983 on, following a study of a new method for the outflow measuring, we started to use a biological larvicide Bacillus thuringiensis serovar israelensis based. The biological control uses the new method in 36.4% of the state area, assisting about 3,500,000 inhabitants.
authors.affiliation: Coordenação de Política de Controle de Zoonoses e Vetores, Secretaria de Saúde, Av. Borges de Medeiros 727-6o andar, 90020-025 Porto Alegre, RS, Brasil. luciabeatriz@terra.com.br
authors.forename: L B
authors.initials: LB
authors.lastname: Mardini
authors.forename: M A
authors.initials: MA
authors.lastname: Torres
authors.forename: G L
authors.initials: GL
authors.lastname: da Silveira
authors.forename: A M
authors.initials: AM
authors.lastname: Atz
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis; D001938:Brazil; D006801:Humans; D007814:Larva; D010572:Pest Control, Biological / Q000379:methods*; D012843:Simuliidae