High insecticide resistance intensity of Anopheles gambiae (s.l.) and low efficacy of pyrethroid LLINs in Accra, Ghana
Rebecca Pwalia, Joannitta Joannides, Alidu Iddrisu, Charlotte Addae, Dominic Acquah-Baidoo, Dorothy Obuobi, Godwin Amlalo, Samuel Akporh, Sampson Gbagba, Samuel K. Dadzie, Duncan K. Athinya, Melinda P. Hadi, Helen Pates Jamet & Joseph Chabi
Parasites & Vectors volume 12, Article number: 299 (2019) Cite this article
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Abstract
Background:
Insecticide resistance of Anopheles gambiae (s.l.) against public health insecticides is increasingly
reported in Ghana and need to be closely monitored. This study investigated the intensity of insecticide resistance of
An. gambiae (s.l.) found in a vegetable growing area in Accra, Ghana, where insecticides, herbicides and fertilizers are
massively used for plant protection. The bioefcacy of long-lasting insecticidal nets (LLINs) currently distributed in the
country was also assessed to delimitate the impact of the insecticide resistance intensity on the efectiveness of those
nets.
Methods:
Three- to five-day-old adult mosquitoes that emerged from collected larvae from Opeibea, Accra (Ghana),
were assayed using CDC bottle and WHO tube intensity assays against diferent insecticides.
Results:
Anopheles gambiae (s.l.) from Opeibea were resistant to all the insecticides tested with very low mortality
observed against organochlorine, carbamates and pyrethroid insecticides using WHO susceptibility tests at diag‑
nostic doses during three consecutive years of monitoring
Conclusions:
WHO susceptibility tests using the diagnostic doses described the susceptibility status of the mosquito
colony while CDC bottle and WHO tube intensity assays showed varying degrees of resistance intensity
Training in insecticide resistance Monitoring
High insecticide resistance intensity of Anopheles gambiae (s.l.) and low efcacy of pyrethroid LLINs in Accra, Ghana
Category:
Aedes, Environment
Date:
June – 13, 2019
Tags:
Eco, Eco Friendly, Health, Protection, Sciences
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