Indoor residual spraying practices against Triatoma infestans in the Bolivian Chaco: contributing factors to suboptimal insecticide delivery to treated households.

ABSTRACT:

Background

Indoor residual spraying (IRS) of insecticides is a key method to reduce vector transmission of Trypanosoma cruzi, causing Chagas disease in a large part of South America. However, the successes of IRS in the Gran Chaco region straddling Bolivia, Argentina, and Paraguay, have not equalled those in other Southern Cone countries.

Aims

This study evaluated routine IRS practices and insecticide quality control in a typical endemic community in the Bolivian Chaco.

Methods

Alpha-cypermethrin active ingredient (a.i.) captured onto filter papers fitted to sprayed wall surfaces, and in prepared spray tank solutions, were measured using an adapted Insecticide Quantification Kit (IQK™) validated against HPLC quantification methods. The data were analysed by mixed-effe

SUBMITTER: Goncalves R 

PROVIDER: S-EPMC8207695 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature