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Scientific Articles

NOT Open Access | Maximizing Impact: Can Interventions to Prevent Clinical Malaria Reduce Parasite Transmission

September 15, 2020 - 14:30 -- NOT Open Access
McCann RS, Cohee LM, Goupeyou-Youmsi J, Laufer MK
Trends Parasitol. 2020 Sep 8:S1471-4922(20)30196-3

Malaria interventions may reduce the burden of clinical malaria disease, the transmission of malaria parasites, or both. As malaria interventions are developed and evaluated, including those interventions primarily targeted at reducing disease, they may also impact parasite transmission.

Efficacy of Fludora® Fusion (a mixture of deltamethrin and clothianidin) for indoor residual spraying against pyrethroid-resistant malaria vectors: laboratory and experimental hut evaluation

September 15, 2020 - 14:28 -- Open Access
Fongnikin A, Houeto N, Agbevo A, Odjo A, Syme T, N'Guessan R, Ngufor C
Parasit Vectors. 2020 Sep 11;13(1):466

A new generation of IRS insecticides which can provide improved and prolonged control of pyrethroid-resistant malaria vector populations are being developed. Fludora® Fusion is a new IRS insecticide containing a mixture of deltamethrin and clothianidin, a neonicotinoid.

Antimalarial drugs inhibit the replication of SARS-CoV-2: an in vitro evaluation

September 15, 2020 - 14:26 -- Open Access
Gendrot M, Andreani J, Pradines B, et al.
Travel Med Infect Dis. 2020 Sep 8:101873

In December 2019, a new severe acute respiratory syndrome coronavirus (SARS-CoV-2) causing coronavirus diseases 2019 (COVID-19) emerged in Wuhan, China. African countries see slower dynamic of COVID-19 cases and deaths. One of the assumptions that may explain this later emergence in Africa, and more particularly in malaria endemic areas, would be the use of antimalarial drugs.

Contributions of IFN-γ and granulysin to the clearance of Plasmodium yoelii blood stage

September 15, 2020 - 10:59 -- Open Access
Hojo-Souza NS, de Azevedo PO, de Castro JT, Teixeira-Carvalho A, Lieberman J, Junqueira C, Gazzinelli RT
PLoS Pathog. 2020 Sep 10;16(9):e1008840

P. vivax-infected Retics (iRetics) express human leukocyte antigen class I (HLA-I), are recognized by CD8+ T cells and killed by granulysin (GNLY) and granzymes. However, how Plasmodium infection induces MHC-I expression on Retics is unknown. In addition, whether GNLY helps control Plasmodium infection in vivo has not been studied. Here, we examine these questions using rodent infection with the P. yoelii 17XNL strain, which has tropism for Retics.

Anopheles metabolic proteins in malaria transmission, prevention and control: a review

September 15, 2020 - 10:49 -- Open Access
Adedeji EO, Ogunlana OO, Fatumo S, Beder T, Ajamma Y, Koenig R, Adebiyi E
Parasit Vectors. 2020 Sep 10;13(1):465.

The increasing resistance to currently available insecticides in the malaria vector, Anopheles mosquitoes, hampers their use as an effective vector control strategy for the prevention of malaria transmission. Therefore, there is need for new insecticides and/or alternative vector control strategies, the development of which relies on the identification of possible targets in Anopheles. Some known and promising targets for the prevention or control of malaria transmission exist among Anopheles metabolic proteins.

Bayesian spatio-temporal modeling of malaria risk in Rwanda

September 15, 2020 - 10:41 -- Open Access
Semakula M, Niragire FI, Faes C
PLoS One. 2020 Sep 10;15(9):e0238504

Every year, 435,000 people worldwide die from Malaria, mainly in Africa and Asia. However, malaria is a curable and preventable disease. Most countries are developing malaria elimination plans to meet sustainable development goal three, target 3.3, which includes ending the epidemic of malaria by 2030. Rwanda, through the malaria strategic plan 2012-2018 set a target to reduce malaria incidence by 42% from 2012 to 2018.

No evidence of amplified Plasmodium falciparum plasmepsin II gene copy number in an area with artemisinin-resistant malaria along the China–Myanmar border

September 15, 2020 - 10:38 -- Open Access
Fang Huang, Biraj Shrestha, Hui Liu, Lin-Hua Tang, Shui-Sen Zhou, Xiao-Nong Zhou, Shannon Takala-Harrison, Pascal Ringwald, Myaing M. Nyunt and Christopher V. Plowe
Malaria Journal 2020 19:334, 14 September 2020

The emergence and spread of artemisinin resistance in Plasmodium falciparum poses a threat to malaria eradication, including China’s plan to eliminate malaria by 2020. Piperaquine (PPQ) resistance has emerged in Cambodia, compromising an important partner drug that is widely used in China in the form of dihydroartemisinin (DHA)-PPQ. Several mutations in a P. falciparum gene encoding a kelch protein on chromosome 13 (k13) are associated with artemisinin resistance and have arisen spread in the Great Mekong subregion, including the China–Myanmar border. Multiple copies of the plasmepsin II/III (pm2/3) genes, located on chromosome 14, have been shown to be associated with PPQ resistance.

Minimal tillage and intermittent flooding farming systems show a potential reduction in the proliferation of Anopheles mosquito larvae in a rice field in Malanville, Northern Benin

September 15, 2020 - 10:36 -- Open Access
Innocent Djègbè, Merdie Zinsou, Edia Flavien Dovonou, Geneviève Tchigossou, Murielle Soglo, Razack Adéoti, Brice Gbaguidi, Seun Atoyebi, Fabrice Chandre, Martin Akogbéto, Jo Lines and Rousseau Djouaka
Malaria Journal 2020 19:333, 14 September 2020

Irrigation systems have been identified as one of the factors promoting malaria disease around agricultural farms in sub-Saharan Africa. However, if improved water management strategy is adopted during rice cultivation, it may help to reduce malaria cases among human population living around rice fields. This study aimed to assess the impact of the different irrigation practices on malaria transmission, as well as to evaluate the water management system that will best mitigate malaria transmission in Malanville, Benin.

Costing malaria interventions from pilots to elimination programmes

September 15, 2020 - 10:34 -- Open Access
Katya Galactionova, Mar Velarde, Kafula Silumbe, John Miller, Anthony McDonnell, Ricardo Aguas, Thomas A. Smith and Melissa A. Penny
Malaria Journal 2020 19:332, 14 September 2020

Malaria programmes in countries with low transmission levels require evidence to optimize deployment of current and new tools to reach elimination with limited resources. Recent pilots of elimination strategies in Ethiopia, Senegal, and Zambia produced evidence of their epidemiological impacts and costs. There is a need to generalize these findings to different epidemiological and health systems contexts.

Effectiveness of peer-learning assisted primary school students educating the rural community on insecticide-treated nets utilization in Jimma-zone Ethiopia

September 15, 2020 - 10:32 -- Open Access
Yohannes Kebede, Lakew Abebe, Guda Alemayehu, Morankar Sudhakar and Zewdie Birhanu
Malaria Journal 2020 19:331, 11 September 2020

Making insecticide-treated nets (ITNs) utilization a social norm would support the global goal of malaria eradication and Ethiopian national aim of its elimination by 2030. Jimma zone is one of the endemic settings in Ethiopia. This study aimed to report effects of malaria education, delivered by students, on community behaviours; particularly ITNs.


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