2016
DOI: 10.1590/0074-02760150409
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Spatial and temporal country-wide survey of temephos resistance in Brazilian populations of Aedes aegypti

Abstract: The organophosphate temephos has been the main insecticide used against larvae of the dengue and yellow fever mosquito (Aedes aegypti) in Brazil since the mid-1980s. Reports of resistance date back to 1995; however, no systematic reports of widespread temephos resistance have occurred to date. As resistance investigation is paramount for strategic decision-making by health officials, our objective here was to investigate the spatial and temporal spread of temephos resistance in Ae. aegypti in Brazil for the la… Show more

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Cited by 65 publications
(58 citation statements)
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“…The use of Aracaju as a sentinel city may have obfuscated the spread of the resistance, delaying the replacement of temephos and leading to an intensification of temephos resistance in the region. Variation in mosquito resistance in closed cities has been seen in other areas in the country 4,7,8 . Because of the large variability in the level of resistance, it is likely that sentinel sites cover an area smaller than expected, considering the values in Sergipe, and this should be taken into account in resistance surveillance plans.…”
Section: Discussionmentioning
confidence: 89%
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“…The use of Aracaju as a sentinel city may have obfuscated the spread of the resistance, delaying the replacement of temephos and leading to an intensification of temephos resistance in the region. Variation in mosquito resistance in closed cities has been seen in other areas in the country 4,7,8 . Because of the large variability in the level of resistance, it is likely that sentinel sites cover an area smaller than expected, considering the values in Sergipe, and this should be taken into account in resistance surveillance plans.…”
Section: Discussionmentioning
confidence: 89%
“…aegypti populations in Sergipe, as well as in other areas in the country [5][6][7][8] , may be related to how temephos is used in each locality. It may be used at different intensities and frequencies, and the mosquito populations could be under different selection pressures.…”
Section: Discussionmentioning
confidence: 99%
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“…Fatores biológicos e antropogênicos são atribuídos à mudança na epidemiologia da dengue e no comportamento do vetor, tais como: mudanças demográficas em populações humanas, urbanização, velocidade e volume de tráfego internacional, introdução de novos genótipos da dengue, fracasso dos programas de controle de vetores devido à resistência aos inseticidas, prática de má gestão e picos sazonais na população do vetor e da dengue, além de fatores climáticos, como o aquecimento global e os fenômenos El Niño e La Niña, que influenciam na intensidade das chuvas e produzem alterações da biodiversidade nas regiões intertropicais, facilitando a permanência do vetor [4][5][6] . As consequências de uma epidemia de dengue são sentidas em diversas áreas sociais, tais como a economia, a educação e, principalmente, a saúde 7,8 .…”
Section: ▄ Introduçãounclassified