La campaña de emergencia mediante rociamientos en volúmenes ultrarreducidos contra ejemplares adultos de Aedes aegypti realizada en 1982 en Paramaribo, Suriname

Abstract

In an attempt to stop an epidemic of dengue, the city of Paramaribo was sprayed in May and June 1982 with 95

malathion from truck-mounted ultralow volume (ULV) sprayers. The entire city, with an area of 70 square kilometers and 552 kilometers of roads, was sprayed twice on 37 evenings spread over seven and a half weeks by two sprayers working four hours each evening (1800-2200 hours), there being a one-week interval betweeen the two sprayings in each zone. During the first three weeks of the campaign, a dosage of 456 ml active ingredient per km of road (50 ml/ha if the swath width was 91 m) gave high kills of Aedes aegypti adults caged indoors and outdoors on a sprayed block; but ovitrap results showed only modest reduction of egg-laying, and even that for only about three days after the spray application. The dosage was therefore increased to 901 ml/km (99 ml/ha) in weeks 4-7, but in a second test area the number of positive ovitraps was again reduced only modestly for a short period. It thus appears that neither dosage was adequate to suppress the adult A. aegypti population, and also that the method of application was too slow to stop the targeted dengue epidemic

Este artículo esta publicado en ingles en el Bull. Pan Am. Health Organ 20(3):294-303, 1986