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Effect of interventions to reduce malaria incidence among military personnel on active duty: study protocol for a cluster randomised controlled trial of the impact of etofenprox-treated uniforms, permethrin-treated uniforms and DEET insect repellent

November 27, 2021 - 13:57 -- Open Access
Msellemu D, Ross A, Temu L, Moshi I, Hofer L, Mwanziva C, Kohi YM, Moore SJ
Trials. 2021 Nov 21;22(1):825

While there is strong evidence that bite protection methods such as permethrin-treated clothing and topical insect repellents are protective against insect bites, there are few studies assessing the impact on malaria infection. This study will estimate the protective efficacy of treated uniforms and DEET insect repellent on the incidence of malaria infection among military personnel in an operational setting. Permethrin-treated uniforms used with DEET lotion will be compared to etofenprox-treated uniforms with DEET lotion. The effect of DEET lotion will be estimated by comparing permethrin-treated uniforms with DEET or placebo lotion.

Testing Mosquitoes for Student Inquiry: Husbandry Lessons in the Lab

April 1, 2021 - 09:14 -- Open Access
Erica Kosal, Beverly I. Anaele
The American Biology Teacher (2021) 83 (3): 180–184.

Because mosquitoes are a public health concern, several chemical insect repellents have been created and used for many years. While some of these products, such as DEET and permethrin, are effective at controlling mosquito populations, their excessive use may lead to animal, human, and environmental harm if applied improperly. Understanding the life cycles of mosquitoes, their feeding preferences, and their responses to natural plant extracts could enable scientists to develop more environmentally safe but still effective insect repellents.

NOT Open Access | Potentiation Effects of Ficus sycomorus Active Fraction Against Permethrin-Resistant Field-Population of Anopheles coluzzii (Diptera: Culicidae)

March 9, 2021 - 15:39 -- NOT Open Access
Anosike CA, Babandi A, Ezeanyika LUS
Neotrop Entomol (2021)

Insecticide resistance in mosquitoes is increasing amidst growing cases of global malaria, leading to high fatality in mostly Africa. To overcome the resistance as well as environmental effects of the synthetic insecticides, preliminary insecticidal and botanical potentiating effects of sub-lethal concentration (LC25) Ficus sycomorus active fraction (AFFS) and its synergistic potential with standard insecticide permethrin were evaluated against malarial vector Anopheles coluzzii (Coetzee & Wilkerson) populations. The glutathione-S-transferase (GST) inhibitory activity of the AFFS was also investigated compared to standard GST inhibitor, diethyl meleate (DEM).

Consequences of larval competition and exposure to permethrin for the development of the rodent malaria Plasmodium berghei in the mosquito Anopheles gambiae

March 3, 2020 - 13:07 -- Open Access
Hauser G, Thiévent K, Koella JC
Parasites & Vectors, 2020 Feb 27;13(1):107

Mosquitoes and other vectors are often exposed to sublethal doses of insecticides. Larvae can be exposed to the run-off of agricultural use, and adults can be irritated by insecticides used against them and move away before they have picked up a lethal dose. This sublethal exposure may affect the success of control of insect-borne diseases, for it may affect the competence of insects to transmit parasites, in particular if the insects are undernourished.

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