Personal protection by long-lasting insecticidal hammocks against the bites of forest malaria vectors

In Southeast Asia, malaria vectors bite outside the houses before bedtime, and forest dwellers rarely use insecticide-treated nets (ITNs). Thus, we tested the protection of long-lasting insecticidal hammocks (LLIH) using Olyset[trade mark sign] technology against exophagic vectors in two forest vill...

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Bibliographic Details
Published in:Tropical medicine & international health 2010-03, Vol.15 (3), p.336-341
Main Authors: Sochantha, T, Van Bortel, W, Savonnaroth, S, Marcotty, T, Speybroeck, N, Coosemans, M
Format: Article
Language:English
Subjects:
Animals
Anopheles
Asie du Sud
Bedding and Linens - standards
Biological and medical sciences
Cambodge
Cambodia
Cambodia - epidemiology
Forests
General aspects
hamac
hamaca
hammock
Human protozoal diseases
Humans
Infectious diseases
Insect bites
Insect Bites and Stings - epidemiology
Insect Bites and Stings - prevention & control
Insect Vectors - drug effects
Insecticides
long-lasting insecticidal net
Malaria
Malaria - prevention & control
Medical sciences
Mosquito Control - methods
Mosquitoes
moustiquaire imprégnée d’insecticide durable
Parasitic diseases
Personal protective equipment
prevención
prevention
Protozoal diseases
prévention
redes mosquiteras impregnadas con insecticida de larga duración
Southeast Asia
sudeste asiático
Trees
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Summary:In Southeast Asia, malaria vectors bite outside the houses before bedtime, and forest dwellers rarely use insecticide-treated nets (ITNs). Thus, we tested the protection of long-lasting insecticidal hammocks (LLIH) using Olyset[trade mark sign] technology against exophagic vectors in two forest villages of Cambodia. In each village, we conducted two entomological surveys (middle and end of the rainy season), each lasting 10 consecutive nights. These comprised human landing collections during the whole night by people sitting outside in the hammocks. Five households were selected per village, and for each household, two fixed positions were allocated: one for the control and one for the treated hammock. In total, 6449 mosquitoes were collected from control hammocks compared to 4481 in treated hammocks. Personal protection conferred by the hammocks was 46% (CI 95%: 35-55%) against the bites of Anopheles minimus. A significant reduction of An. dirus bites (46% CI 95%: 25-62%) was only observed at the end of the rainy season. An. maculatus and culicines bites were only reduced in one of the two study sites. Even if this LLIH is not inducing full protection against the bites of malaria vectors, it could prove effective in protecting forest workers and villagers before sleeping time. LLIH can be an additional and valuable tool in eliminating artemisinin-resistant malaria in the region.
ISSN:1360-2276
1365-3156
DOI:10.1111/j.1365-3156.2009.02457.x