ISSN: 2639-216X
Authors: Duquesne J, Leyva M, Montada D, Brito A, Bofill LM and Duarte RF*
The province of Matanzas, usually performs intensive control of Aedes aegypti using pyrethroids as adulticide mainly; however, the municipality of Cardenas, presents health areas with high House Index (IH) and Breteau Index (IB). The objective of the following study was to evaluate the efficacy of K-Othrine Polyzone SC 62.5 (i.a deltamethrin), applied in intra and extra-home resting sites as a residual treatment in the health area Heroes of Moncada in the municipality of Cárdenas. For the study, the state of susceptibility to deltamethrin was evaluated by means of the methodology of impregnated papers to a population of mosquitoes in the selected area. Subsequently, 56 blocks (1960 dwellings) were selected and K-Othrine Polyzone 62.5 SC was applied intradomiciliary in the resting sites following the methodology of the World Health Organization. Within this number of blocks, 14 blocks (574 dwellings) were selected for an additional outdoor treatment in conjunction with the intradomiciliary treatment. The residual nature of the formulation was evaluated using the cone methodology for 15 weeks, as this was the minimum durability time recommended by the manufacturer. Efficacy was determined using the casa, Breatau and ovitrampa indices. Post-intervention, the surfaces with the highest residual were metal, plastic and concrete. During one year the selected apples remained with indices below 0.02 and 0.03 and of the 14 apples with exterior and interior treatment only two of them repeated positivity after this period of time. One and a half years later, the mosquito population collected was susceptible to the active ingredient. The residual treatment with this product, added to the vector control program activities, produced a positive impact on the selected apples, constituting a good option for the reduction of Ae. aegypti indices.
Keywords: Aedes aegypti; Effectiveness; Breteau Index; House Index; K-Othrine Polyzone
