[Effectiveness of insecticidal formulations for the Aedes aegypti adult population control in La Habana, Cuba].

Introduction: the vector control remains the sole sustainable measure to prevent dengue transmission in which the key role goes to adulticides in case of high rates of infestation by the vector, outbreaks or dengue epidemics. Pyrethroids are the most used whereas organophosphorous chloripirifos has been occasionally used because of the cost.

Objectives: to determine the effectiveness of insecticides in their commercial formulation that is applied today by the National Unit of Anti-Vector Control and Surveillance in Cuba for the control of Ae aegypti adults such as chlorpirifos (Terfos 48 CE) and pyrethroids, lambda-cyhalothrin (ICON 2.

[Operational impact of the use of insecticidal products on Aedes aegypti larvae in Havana province].

Introduction: In spite of the huge efforts of the Aedes aegypti eradication program in Cuba, there are still certain infestation indexes favoring the development of outbreaks or epidemics in some regions of the country. Havana province holds a leading position in this negative indicator, in which the use of insecticides plays an important role.

Objectives: To evaluate the impact of the use of insecticides in the development of drug resistance by this species in Havana.

[Effect of pyriproxyfen for the Aedes (S) aegypti control (Diptera: Culicidae) in strains with various degrees of temephos resistance].

Introduction: the continuous use of the organophosphate temephos for Aedes (Stegomyia) aegypti (Linnaeus, 1762) has prompted the emergence of resistance to this product in several countries. Pyriproxyfen is an analogue of the juvenile hormone recommended by the World Health Organization as one of the alternative regulators of the dengue vector in drinking waters.

Objectives: to evaluate the efficacy of pyriproxyfen in those strains with various degrees of temephos resistance, in order to be used as a possible regulator of Ae.

[Assessing the insecticide resistance of an Aedes aegypti strain in El Salvador].

Objectives: To assess the level of insecticide susceptibility of a certain Aedes aegypti strain found in El Salvador and to explain the mechanisms for its resistance to temephos.

Methods: An A. aegypti strain from the municipality of Soyapango, Department of San Salvador, El Salvador, was studied.

[Determination of insecticide-resistance and resistance mechanisms of Blattella germanica (Dictyoptera: Blattellidae)].

In this paper, the level of resistance to four insecticides of 3 Blatella germanica strains collected from various places in the City of Havana province was evaluated. These strains were resistant to two pyrethroids (cypermethrin and lambda-cyalothrine) and to organophosphorate malathion but susceptible to carbamate propoxur. The values of alpha and beta esterases, acetylcholinesterase and gluthatione-S-transferase were estimated in three strains involved in the study.

[Ecological factors linked to the presence of Aedes aegypti larvae in highly infested areas of Playa, a municipality belonging to Ciudad de La Habana, Cuba].

Objectives: To identify local ecological factors that might have had an impact on the higher infestation rates by the vector mosquito Aedes aegypti seen in four urban health districts of Ciudad de La Habana, Cuba, and to determine the type of containers with the highest number of larvae.

Methods: This is a descriptive study that was carried out in four health areas (Docente, 28 de Enero, 26 de Julio, and 1. degrees de Enero) within Playa, a municipality belonging to Ciudad de La Habana, Cuba.