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Volume 13, Number 2—February 2007
Research

Reduced Efficacy of Insecticide-treated Nets and Indoor Residual Spraying for Malaria Control in Pyrethroid Resistance Area, Benin

Raphael N’Guessan*, Vincent Corbel†, Martin Akogbéto‡§, and Mark RowlandComments to Author 
Author affiliations: *London School of Hygiene and Tropical Medicine, Cotonou, Benin, West Africa; †Institut de Recherche pour le Developpement, Montpellier, France; ‡University of Abomey-Calavi, Cotonou, Benin; §Centre de Recherche Entomologique, Cotonou, Benin¶London School of Hygiene and Tropical Medicine, London, United Kingdom;

Main Article

Table 1

Residual activity of lambdacyalothrin (insecticide)-treated nets (ITNs) and indoor residual spraying over 3 mo in experimental huts, Malanville and Ladji field stations*

When and where substrate testedITNs at 18 mg/m2
Indoor residual spraying at 30 mg/m2
Sides + top of net
Ceiling
Walls
No. tested% Corrected mortalityNo. tested% Corrected mortalityNo. tested% Corrected mortality
Wk 0






Malanville
77
100
33
100
60
100
Ladji
51
100
30
93.3
54
100
Wk 2
Ladji521002210041100
Wk 4
Ladji541002152.44742.5
Wk 6
Ladji571002580.04531.1
Wk 8
Malanville521002941.4542.6
Ladji4497.7825.03918.5

*As determined by using World Health Organization cone bioassays and susceptible Anopheles gambiae (Kisumu).

Main Article

Page created: June 29, 2010
Page updated: June 29, 2010
Page reviewed: June 29, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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