We also evaluated impacts of a 2014 citywide spray program by the local Ministry of Health, which reduced adult populations by ~60 percent. Parity surveys in the sprayed sector during the 2014 spray period indicated an increase in the proportion of very young females. Here, the sprayed sector’s number of adults per house was reduced ~64 percent relative to baseline. In the 2014 experiment, sprayed and buffer sectors included 1,117 and 1,049 houses, respectively. Spraying reduced the mean number of adults captured per house by ~83 percent relative to the pre-spray baseline survey. In 2013, spray and buffer sectors included 398 and 765 houses, respectively. In each, a central sprayed sector was surrounded by an unsprayed buffer sector. Methodology/Principal findings Two experimental evaluations of non-residual, indoor ULV pyrethroid spraying were conducted in Iquitos, Peru. Given the widespread use of this method, the lack of large-scale experiments or detailed evaluations of municipal spray programs is problematic. aegypti emergency control in many countries. Indoor, ultra low volume ( ULV) space spraying with pyrethroid insecticides is the main approach used for Ae. Gould, Fredīackground Aedes aegypti is a primary vector of dengue, chikungunya, Zika, and urban yellow fever viruses.
Del Aguila, Clara Pinedo, Raul Cardenas, Roldan Pacheco, Carlos Chalco, Enrique Rodriguez-Ferruci, Hugo Scott, Thomas W. Efficacy of Aedes aegypti control by indoor Ultra Low Volume ( ULV) insecticide spraying in Iquitos, Peru
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