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2 results on '"Houansou, Télesphore"'

1. Evaluation at the Level of Health Facilities, of the Protective Efficacy of LLINs in Children under 5 Years Old from Localities of Low and High Resistance of Vectors to Pyrethroid Insecticides in Benin in West Africa

Author

Tokponnon Tatchémè Filémon, Ossè Razaki, Arthur Sovi, Wakpo Abel, Hounto Ogouyémi Aurore, Sissinto Yolande, Adechoubou Alioun, Houansou Télesphore, Oke Mariam, Kinde-Gazard Dorothée, Massougbodji Achille, and Akogbeto Martin

Subjects
General Energy
Published
2022
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2. Implications of insecticide resistance for malaria vector control with long-lasting insecticidal nets: evidence from health facility data from Benin

Author

Tokponnon, Filémon T., Sissinto, Yolande, Ogouyémi, Aurore Hounto, Adéothy, Adicath Adéola, Adechoubou, Alioun, Houansou, Télesphore, Oke, Mariam, Kinde-Gazard, Dorothée, Massougbodji, Achille, Akogbeto, Martin C., Cornelie, Sylvie, Corbel, Vincent, Knox, Tessa B., Mnzava, Abraham Peter, Donnelly, Martin J., Kleinschmidt, Immo, Bradley, John, Faculté des Sciences de la Santé de Cotonou (Faculté des Sciences de la Santé de Cotonou), Université d’Abomey-Calavi = University of Abomey Calavi (UAC), Centre de Recherche Entomologique de Cotonou (CREC), Ministère de la Santé, Vector Control Group (MIVEGEC-VCG), Evolution des Systèmes Vectoriels (ESV), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Global Malaria Program, Organisation Mondiale de la Santé / World Health Organization Office (OMS / WHO), Liverpool School of Tropical Medicine (LSTM), London School of Hygiene and Tropical Medicine (LSHTM), and University of Abomey Calavi (UAC)

Subjects
Male, Rural Population, lcsh:Arctic medicine. Tropical medicine, Mosquito Control, lcsh:RC955-962, Resistance, lcsh:Infectious and parasitic diseases, Insecticide Resistance, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, parasitic diseases, Disease Transmission, Infectious, Animals, Benin, Humans, lcsh:RC109-216, Insecticide-Treated Bednets, Insecticide, Research, Incidence, Infant, Newborn, Infant, Malaria, Culicidae, Pyrethroid, Child, Preschool, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Biological Assay, Female, Vector, Follow-Up Studies
Abstract

International audience; Background: Insecticide-based interventions have averted more than 500 million malaria cases since 2000, but insecticide resistance in mosquitoes could bring about a rebound in disease and mortality. This study investigated whether insecticide resistance was associated with increased incidence of clinical malaria.Methods: In an area of southern Benin with insecticide resistance and high use of insecticide-treated nets (ITNs), malaria morbidity and insecticide resistance were measured simultaneously in 30 clusters (villages or collections of villages) multiple times over the course of 2 years. Insecticide resistance frequencies were measured using the standard World Health Organization bioassay test. Malaria morbidity was measured by cases recorded at health facilities both in the whole population using routinely collected data and in a passively followed cohort of children under 5 years old.Results: There was no evidence that incidence of malaria from routinely collected data was higher in clusters with resistance frequencies above the median, either in children aged under 5 (RR = 1.27 (95% CI 0.81-2.00) p = 0.276) or in individuals aged 5 or over (RR = 1.74 (95% CI 0.91-3.34) p = 0.093). There was also no evidence that incidence was higher in clusters with resistance frequencies above the median in the passively followed cohort (RR = 1.11 (0.52-2.35) p = 0.777).Conclusions: This study found no association between frequency of resistance and incidence of clinical malaria in an area where ITNs are the principal form of vector control. This may be because, as other studies have shown, ITNs continue to offer some protection from malaria even in the presence of insecticide resistance. Irrespective of resistance , nets provide only partial protection so the development of improved or supplementary vector control tools is required to reduce Africa's unacceptably high malaria burden.

Published
2019
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