Resistance status to the larvicide temephos in populations of Aedes aegypti from Argentina

ALBRIEU LLINÁS, GUILLERMO; SECCACINI, EMILIA; GARDENAL, CRISTINA N.; LICASTRO, SUSANA

MEMóRIAS DO INSTITUTO OSWALDO CRUZ.

Memórias do Instituto Oswaldo Cruz

Lugar: Rio de Janeiro; Año: 2010 vol. 105 p. 113 - 116

0074-0276

In Argentina, more than 25,000 cases of dengue were reported in the summer of 2009, even in provinces where the disease was formerly absent. We analysed the susceptibility levels to the larvicide temephos in seven populations of Aedes aegypti, the primary vector of dengue, collected during summer 2007/2008, using the susceptible Rockefeller strain as a control. Although no control failures were observed during the experiment, a majority of the lethal concentration and resistance ratio values indicate an incipient resistance. An integrative program to monitor the resistance of Ae. aegypti to insecticides is needed in the country.