First determination of impact and outcome indicators following indoor residual spraying (IRS) with deltamethrin in a new focus of anthroponotic cutaneous leishmaniasis (ACL) in Iran

ObjectiveTo determine the impact and outcome indicators following residual spraying with deltamethrin in new focus of cutaneous leishmaniasis during 2010–2011.MethodsDeltamethrin WP 5% was applied at 25 mg a.i/m2.in intervention area using Hudson compression sprayer. Sticky trap were used to collect sand flies twice each month from human and animal dwelling in either or intervention and control areas.ResultsThe incidence of disease was significantly decreased (3.65 versus 8.43). There was a significant difference between treats and control areas on blood fed and gravidity of sand flies.ConclusionsThe results of current study clearly indicated that indoor residual spraying caused a significant decline of density, blood fed and gravidity of vectors resulting a sharp reduction of disease incidence.