Screening Aedes aegypti (Diptera: Culicidae) Populations From Pernambuco, Brazil for Resistance to Temephos, Diflubenzuron, and Cypermethrin and Characterization of Potential Resistance Mechanisms.

Resistance to chemical insecticides detected in Aedes aegypti (L.) mosquitoes has been a problem for the National Dengue Control Program (PNCD) over the last years. In order to provide deeper knowledge of resistance to xenobiotics, our study evaluated the susceptibility profile of temephos, diflubenzuron, and cypermethrin insecticides in natural mosquito populations from the Pernambuco State, associating these results with the local historical use of such compounds.

[Prevalence and worm burden of Schistosomiasis mansoni before and after collective treatment in Jaboatão dos Guararapes, Pernambuco, Brazil].

Objective: to evaluate the effectiveness of collective treatment for Schistosomiasis mansoni in two endemic localities in Jaboatão dos Guararapes-PE.

Methods: we described the prevalence of Schistosomiasis mansoni and the average parasite load before and after collective treatment in the period 2011-2013; data from the Schistosomiasis mansoni Information System and completion of sample surveys reports were used.

Results: there is a reduction in 8.

Insecticide resistance in Aedes aegypti populations from Ceará, Brazil.

Background: Organophosphates and pyrethroids are used widely in Brazil to control Aedes aegypti, the main vector of dengue viruses, under the auspices of the National Programme for Dengue Control. Resistance to these insecticides is widespread throughout Brazil. In Ceará the vector is present in 98% of districts and resistance to temephos has been reported previously.