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Mali

Impact of Three-Year Intermittent Preventive Treatment Using Artemisinin-Based Combination Therapies on Malaria Morbidity in Malian Schoolchildren

September 23, 2020 - 08:57 -- Open Access
Author(s): 
Maiga H, Barger B, Djimde AA, et al.
Reference: 
Trop Med Infect Dis. 2020 Sep 17;5(3):E148

Previous studies have shown that a single season of intermittent preventive treatment in schoolchildren (IPTsc) targeting the transmission season has reduced the rates of clinical malaria, all-cause clinic visits, asymptomatic parasitemia, and anemia. Efficacy over the course of multiple years of IPTsc has been scantly investigated.

Rapid reduction of malaria transmission following the introduction of indoor residual spraying in previously unsprayed districts: an observational analysis of Mopti Region, Mali, in 2017

September 22, 2020 - 10:18 -- Open Access
Author(s): 
Joseph Wagman, Idrissa Cissé, Molly Robertson, et al.
Reference: 
Malaria Journal 2020 19:340, 19 September 2020

The National Malaria Control Programme (NMCP) of Mali has had recent success decreasing malaria transmission using 3rd generation indoor residual spraying (IRS) products in areas with pyrethroid resistance, primarily in Ségou and Koulikoro Regions. In 2015, national survey data showed that Mopti Region had the highest under 5-year-old (u5) malaria prevalence at 54%—nearly twice the national average—despite having high access to long-lasting insecticidal nets (LLINs) and seasonal malaria chemoprevention (SMC). Accordingly, in 2016 the NMCP and other stakeholders shifted IRS activities from Ségou to Mopti. Here, the results of a series of observational analyses utilizing routine malaria indicators to evaluate the impact of this switch are presented.

Two-Year Scale-Up of Seasonal Malaria Chemoprevention Reduced Malaria Morbidity among Children in the Health District of Koutiala, Mali

September 16, 2020 - 13:07 -- Open Access
Author(s): 
Maiga H, Gaudart J, Djimde AA, et al.
Reference: 
Int J Environ Res Public Health. 2020 Sep 11;17(18):E6639

Previous controlled studies demonstrated seasonal malaria chemoprevention (SMC) reduces malaria morbidity by >80% in children aged 3-59 months. Here, we assessed malaria morbidity after large-scale SMC implementation during a pilot campaign in the health district of Koutiala, Mali.

Ultra-sensitive RDT performance and antigen dynamics in a high-transmission Plasmodium falciparum setting in Mali

September 5, 2020 - 15:03 -- Open Access
Author(s): 
Emily N. Reichert, Jen C. C. Hume, Hannah C. Slater, et al.
Reference: 
Malaria Journal 2020 19:323, 3 September 2020

The recent expansion of tools designed to accurately quantify malaria parasite-produced antigens has enabled us to evaluate the performance of rapid diagnostic tests (RDTs) as a function of the antigens they detect—typically histidine rich protein 2 (HRP2) or lactate dehydrogenase (LDH).

Predicting Malaria Transmission Dynamics in Dangassa, Mali: A Novel Approach Using Functional Generalized Additive Models

September 5, 2020 - 14:39 -- Open Access
Author(s): 
Ateba FF, Febrero-Bande M, Doumbia S, et al.
Reference: 
Int J Environ Res Public Health. 2020 Aug 31;17(17):E6339

Mali aims to reach the pre-elimination stage of malaria by the next decade. This study used functional regression models to predict the incidence of malaria as a function of past meteorological patterns to better prevent and to act proactively against impending malaria outbreaks. All data were collected over a five-year period (2012-2017) from 1400 persons who sought treatment at Dangassa's community health center.

Evaluation of seasonal malaria chemoprevention in two areas of intense seasonal malaria transmission: Secondary analysis of a household-randomised, placebo-controlled trial in Houndé District, Burkina Faso and Bougouni District, Mali

August 25, 2020 - 07:46 -- Open Access
Author(s): 
Cairns ME, Sagara I, Dicko A, et al.
Reference: 
PLoS Med. 2020 Aug 21;17(8):e1003214

Seasonal malaria chemoprevention (SMC) is now widely deployed in the Sahel, including several countries that are major contributors to the global burden of malaria. Consequently, it is important to understand whether SMC continues to provide a high level of protection and how SMC might be improved. SMC was evaluated using data from a large, household-randomised trial in Houndé, Burkina Faso and Bougouni, Mali.

Combining next-generation indoor residual spraying and drug-based malaria control strategies: observational evidence of a combined effect in Mali

August 17, 2020 - 13:39 -- Open Access
Author(s): 
Joseph Wagman, Idrissa Cissé, Molly Robertson, et al.
Reference: 
Malaria Journal 2020 19:293, 15 August 2020

Ségou Region in central Mali is an area of high malaria burden with seasonal transmission. The region reports high access to and use of long-lasting insecticidal nets (LLINs), though the principal vector, Anopheles gambiae, is resistant to pyrethroids. From 2011 until 2016, several high-burden districts of Ségou also received indoor residual spraying (IRS), though in 2014 concerns about pyrethroid resistance prompted a shift in IRS products to a micro-encapsulated formulation of the organophosphate insecticide pirimiphos-methyl. Also in 2014, the region expanded a pilot programme to provide seasonal malaria chemoprevention (SMC) to children aged 3–59 months in two districts. The timing of these decisions presented an opportunity to estimate the impact of both interventions, deployed individually and in combination, using quality-assured passive surveillance data.

Performance of IRS on malaria prevalence and incidence using pirimiphos-methyl in the context of pyrethroid resistance in Koulikoro region, Mali

August 17, 2020 - 13:22 -- Open Access
Author(s): 
Fousseyni Kané, Moussa Keïta, Boïssé Traoré, Sory Ibrahim Diawara, Sidy Bane, Souleymane Diarra, Nafomon Sogoba and Seydou Doumbia
Reference: 
Malaria Journal 2020 19:286, 12 August 2020

Koulikoro Health District is one of three districts of Mali where the indoor residual spray (IRS) has been implemented from 2008 to 2016. With widespread of resistance to pyrethroid, IRS was shifted from pyrethroid to pirimiphos-methyl from 2014 to 2016. The objective of this study was to assess the added value of IRS to LLINs on the prevalence of parasitaemia and malaria incidence among children under 10 years old.

Host and Parasite Transcriptomic Changes upon Successive Plasmodium falciparum Infections in Early Childhood

July 8, 2020 - 15:48 -- Open Access
Author(s): 
Bradwell KR, Coulibaly D, David Serre, et al.
Reference: 
mSystems Jul 2020, 5 (4) e00116-20

Children are highly susceptible to clinical malaria, and in regions where malaria is endemic, their immune systems must face successive encounters with Plasmodium falciparum parasites before they develop immunity, first against severe disease and later against uncomplicated malaria. Understanding cellular and molecular interactions between host and parasites during an infection could provide insights into the processes underlying this gradual acquisition of immunity, as well as to how parasites adapt to infect hosts that are successively more malaria experienced.

Ex-vivo Sensitivity of Plasmodium falciparum to Common Anti-malarial Drugs: The Case of Kéniéroba, a Malaria Endemic Village in Mali

June 23, 2020 - 15:26 -- Open Access
Author(s): 
Traoré K, Diakité SAS, Diakité M, et al.
Reference: 
Drugs R D. 2020 Jun 18

In 2006, the National Malaria Control Program in Mali recommended artemisinin-based combination therapy as the first-line treatment for uncomplicated malaria. Since the introduction of artemisinin-based combination therapy, few reports are available on the level of resistance of Plasmodium falciparum to the most common anti-malarial drugs in Mali.

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