Dengue: incidência e vigilância entomológica na cidade de Dourados/MS

Abstract

Over the past 20 years, dengue has been a prominent public health problem in Brazil, socio-environmental conditions and the lack of success in combating the vector contribute to make dengue a trivial problem. Mato Grosso do Sul is one of the States that has been showing high incidence of the disease, in 2007 there were 69,250 and 2010, 82,597 notification, the incidence of cases in the year of 2007 was 2,976 and in the year of 2010, 3,500 cases. Dourados has presented a large number of cases of dengue in recent years. The main objective of this research was to evaluate the incidence of dengue in five neighborhoods of Dourados, MS with large number of cases in 2010 and to monitor the weekly presence of mosquitoes through egg traps, and relate the quantity of eggs in the months of gathering (November/2010 the June 2011). By interviewing households (n=500) was conducted a survey of cases of dengue in 100 households in neighborhoods Florida II, Novo Horizonte, Cachoeirinha, IV Plano and Jardim Agua Boa in the city of Dourados, MS. The interviews (N = 1,952 residents) has shownthat 495 cases of dengue were notified, what would meant one case per residence and an incidence of 25,359. The number of notifications submitted by Dourado’s Town Hall was 1,374 cases of dengue in the five neighborhoods, with an estimated incidence of 4,332, the prevalence of cases reported was six times higher when compared with the estimated incidence of cases of the Town Hall. It was possible to observe that the number of cases registered by the Town Hall was smaller than in the research results. This might indicates that the problem is much concerning than it appears and that abiotic factors as well as precipitation and temperature regulates larval density, the period from January to March revealed higher amount of eggs.