View clinical trials related to Malaria.
Filter by:In areas of the Sahel sub-region of Africa with intense seasonal malaria transmission, seasonal malaria chemoprevention (SMC) with sulfadoxine-pyrimethamine and amodiaquine (SP+AQ) has become the standard-of-care for the prevention of malaria in children. Despite the scale-up of SMC across West Africa, the malaria burden remains high. Reasons for this are not well understood, however, it is hypothesized that children eligible for SMC who get malaria may be underdosed or may have not received SP+AQ. Moreover, there are major concerns that the continued use of the SMC strategy may increase selection of AQ and/or SP-resistant Plasmodium falciparum parasites. The overall objective of this observational study are to understand the factors driving malaria among children eligible to receive SMC and whether circulating levels of sulfadoxine (SDX), pyrimethamine (PYR), and AQ are associated with risks of malaria and antimalarial drug resistance.
This is a randomized, double blind, placebo-controlled, single site, trial of a condensed regimen of PfSPZ Vaccine administered on Days 1, 8 and 29 by direct venous inoculation (DVI) to assess safety, tolerability, immunogenicity and vaccine efficacy (VE) against heterologous controlled human malaria infection (CHMI) conducted at varying time intervals after the third immunization (14, 42 or 70 days). The trial is designed to simulate pre-deployment immunization of military personnel. Prior studies with this regimen show high level protection (>80%) against CHMI at 21 days, but the onset and duration of protection have not been fully defined.
The BOHEMIA program consists of a combination of studies organized around a central community prevention mass drug administration protocol and four sub-studies (i.e.; social science, entomology, health economics, and environmental), each written as an individual protocol. The protocol is central but used in two separate, individually powered trials in Mozambique and Kenya. The trials have been powered on the efficacy outcome and designed to meet the requirements of WHO´s preferred product characteristics (PPC) for endectocides.
Antimalarial Herbal medicine known as Maytenus senegalensis will be evaluated for its safety, tolerability and efficacy among Tanzanian male adults aged 18 to 45 years. The first primary objective is to assess the safety and tolerability of malaria herbal remedy of Maytenus senegalensis among healthy male adults aged 18 to 45 years in Tanzania. And the second objective is to evaluate the safety, tolerability as well as efficacy of malaria herbal remedy Maytenus senegalensis (MALHERBAL) for the treatment of Tanzanian adults aged 18 to 45 years with uncomplicated malaria compared to Artemether-lumefantrine.
In this randomized, double-blind, placebo-controlled trial, 268 healthy Malian children aged 6-10 years, residing in Bancoumana and surrounding villages, will be administered three doses of 9.0x10^5 Pf sporozoites (PfSPZ) of PfSPZ Vaccine (or placebo) at 1, 8, and 29-days using direct venous inoculation (DVI). The study is composed of a single cohort with two arms (categorized by placebo control/experimental groups) designed to assess the safety, immunogenicity and protective efficacy of PfSPZ Vaccine. All subjects will receive artemether-lumefantrine (AL) approximately 1- 2 weeks before the first dose of PfSPZ Vaccine or normal saline for clearance of Pf parasitemia. Vaccinated participants and non-immunized controls will be followed for safety and monitored for development of parasitemia through the natural malaria transmission season to estimate vaccine efficacy (VE).
Objective: to measure the effectiveness and safety of (artemether-lumefantrine) AL and (dihydroartemisinin-piperaquine) DP in patients (> 6 months) suffering from uncomplicated P. falciparum malaria. Patients coming to Bandim Health Center will, if accepting, be randomised to study-arm. Medication will be provided and first dose given. Patients will be followed-up on day 7, 14, 28, and 42 with clinical evaluation, malaria film and filter-paper blood-sample for polumerase chain reaction (PCR) on re-appearing parasites. On day 21 and 35 a telephone-interview will be performed. Primary out-come: adequate clinical and parasitological response rate on day 42. Secondary out-comes: safety, re-infection vs recrudescence, and haemoglobin on day 42.
Background: Malaria by P falciparum is a public health problem in more than 100 municipalities of Colombia. The country is using the artemether+lumefantrine (AM+L) fixed combination for uncomplicated P falciparum malaria but it is ideal to have different types of formulations with similar efficacy that may be used in diverse circumstances. One alternative of treatment is using preparations containing artesunate and amodiaquine (AS+AQ) in fixed combination, which can be given in a simpler dosing regimen. In order to assess the efficacy of that combination in an area with suspected risk of resistance to amodiaquine an open controlled clinical trial was carried out in Colombia. Methods: The study was done in Choco, a high endemic area for malaria by P falciparum, from August 2008 and September 2009. Patients diagnosed with uncomplicated malaria (n=210) malaria were randomized in two arms, one receiving AS+AQ and the other AM+L. The main clinical results was parasitological cure, i.e. a negative blood smears, that was assessed, for both groups, at days 1, 2, 3, 7, 14, 21 and 28 after the onset of treatment. Results: There were no losses at follow up. The mean age of the enrolled study subjects was of 37.5 years without differences between study arms. Both therapies were very well tolerated in general. The efficacy for AS+AQ was 100%, and 99% for AM+L (p>0.1). In average, patients in the AS+AQ arm became negative for P falciparum parasites and gametocytes earlier than those at the AM+L arm. Blood smears became negative after one day of treatment with AS+AQ and after two days of treatment with AM+L. Gametocytes disappeared after 2 days of treatment in the AS+AQ arm compared to 4 days in the AM+L arm. Conclusions: In this study, the efficacy of the AS+AQ combination was similar to that of the AM+L. This finding do not support the hypothesis that there is a level of resistance to amodiaquine that prevents its use combined with artemisinin derived.
This community-based cluster randomized controlled trial aims to evaluate the effectiveness of time-limited, community-wide mass drug administration (MDA) with dihydroartemisinin-piperaquine (DHA-PPQ) and single low-dose primaquine (SLD-PQ) on Plasmodium falciparum transmission compared to standard-of-care seasonal malaria chemoprevention (SMC). The study will be conducted in a moderate-to-low malaria transmission setting of Senegal with optimized malaria control measures (e.g., proactive community case management and piperonyl butoxide pyrethroid long-lasting insecticidal nets (PBO LLINS)).
This is a first-in-human phase I, open-label, single-site, dose escalation study to determine the safety, tolerability and Plasmodium falciparum transmission reducing activity of the R0.6C vaccine in two different adjuvant combinations.
A school-based, prospective, cohort study was conducted to evaluate the epidemiology of P. falciparum (Pf) infections in school-age children and determine the impact of the screen-and-treat approach on Pf infection and anemia prevalence among students in two different transmission settings. Investigators aimed to evaluate how frequently malaria rapid diagnostic tests (mRDTs) fail to detect low-parasite-density infections as well as whether low-density infections contribute to the burden and health consequences of Pf infection in school-age children and whether they contain gametocytes, the parasite stage required for transmission from humans to mosquitos.