View clinical trials related to Malaria.
Filter by:This is a prospective, double-blind, double-dummy, multicenter, comparative study. A total of 300 subjects will be randomized to treatment on Day 1, of which a minimum of 50 female subjects must be enrolled that display moderate glucose-6-phosphate dehydrogenase (G6PD) deficiency (>=40% - <70% of the site median G6PD value). Subjects must have a blood smear that is positive for P. vivax at entry. Subjects will be randomized 2:1 to receive tafenoquine (TQ)/chloroquine(CQ) or the active comparator primaquine (PQ)/CQ. All subjects will receive CQ on Days 1 to 3, followed by TQ or PQ and matching placebo beginning on Day 1 or 2. Tafenoquine, or matching placebo, will be given as a single, 300mg dose. Subjects will receive PQ (15mg once daily) or matching placebo for 14 days. The duration of the study is 180 days, including screening and randomization to treatment (Day 1), three in-hospital days (Days 1-3), four out-patient visits while on treatment with study medication (Days 5, 8, 11 and 15) and seven follow-up visits (Days 22, 29, 60, 90, 120, 150 and 180). The primary safety data collected in this study will help to understand the hemolysis risk to both G6PD-normal and G6PD-deficient subjects. The efficacy data produced from this study will support the results for sister study TAF112582, the pivotal phase III efficacy and safety study of the TQ program.
This is an open-label evaluation of the safety, tolerability immunogenicity and efficacy of the PfSPZ Vaccine administered by Direct Venous Inoculation (DVI) in healthy, malaria-naïve subjects. There will be 3 groups and a total of 69 subjects (45 immunized subjects and 24 infectivity controls).
Malaria is an important contributor to ill-health experienced by school-children and may have profound consequences for their learning and educational achievement, and there is a small, but growing, body of evidence that suggests malaria control can help improve educational outcomes. In Malawi, school-aged children are estimated to experience 0.59 clinical attacks of malaria each year, equivalent to 2.1 million attacks among Malawian school-aged children. To avert this health burden and potential education consequences, Save the Children in partnership with the Malawian Ministry of Health is providing treatment of symptomatic malaria cases in schools in southern Malawi, as part of the provision of first aid kits (known as Learner Treatment Kits, LTKs) in schools. To evaluate the impact of this intervention, a cluster randomised trial is being conducted among 58 schools in Traditional Area Chikowi in Malawi, over 12 months. Twenty nine schools are randomly selected to receive LTKs, which include malaria rapid diagnostic tests (RDTs) and artemisinin-based combination therapies (ACTs) to treat uncomplicated malaria, and 29 schools serve as the control group. The primary outcome is school attendance, with secondary outcomes of grade repetition, school drop-out and enrolment as well as morbidity, Plasmodium falciparum infection and anaemia. The study aims to conduct several quantitative and qualitative assessments to help evaluate the external validity of the findings.
The primary objective of this study is to determine whether addition of azithromycin (AZ) to Seasonal Malaria Chemoprevention (SMC) using sulphadoxine/pyrimethamine (SP) +amodiaquine (AQ) will provide an additional reduction in deaths and severe illness in young African children. The secondary objectives include an assessment of the safety and cost-effectiveness of the addition of AZ to SMC with SP+AQ. This a double blind, randomised, placebo controlled trial. The unit of randomisation will be the household. Children aged 3 - 59 months will be randomised to receive four cycles of either SP+AQ+AZ or SP+AQ+ placebo at monthly intervals during the peak malaria transmission season. Study Sites: Hounde district in Burkina Faso and in Bougouni district, Mali. Children of 3-59 months of age at the start of each period of drug administration will be eligible for inclusion in the trial provided that parental consent is obtained. Children with a severe, chronic illness or known allergy to one of the study drugs will be excluded. Primary endpoint: Incidence of the combination of death or hospital admission for at least 24 hours, not due to trauma or elective surgery during the intervention period Secondary endpoints: 1. incidence of the primary endpoint during the whole study period 2. attendance at a study health centre with a nonmalaria febrile illness 3. attendance at a study health centre with malaria, 4. the prevalence of moderate anaemia at the end of each malaria transmission season, 5. nutritional status at the end of each malaria transmission season, 6. prevalence of nasopharyngeal carriage with pneumococci and macrolide resistant pneumococci before and at the end of each malaria transmissions season, 7. prevalence of resistance markers to SP at the end of the study, Sample size: 19,200 children (9600 in each country) will be enrolled.
The purpose of this study is to conduct long-term surveillance for efficacy, safety and immunogenicity of the GSK Biologicals RTS,S/AS01E candidate Plasmodium falciparum malaria vaccine in infants and children in Africa following a primary vaccination series (NCT00866619). No new subjects will be enrolled in this extension study.
Background: - Malaria is a disease that affects many people in Mali and in Africa. It is caused by germs that are spread by mosquito bites. Researchers are creating vaccines that they hope will prevent malaria infection and/or the spread of it. Objective: - To test if the PfSPZ vaccine can stop malaria spread by mosquitoes. Eligibility: - People currently enrolled in the ongoing PfSPZ malaria vaccine trial. Participants must be willing to have uninfected mosquitoes bite them. Design: - Participants will be able to take part in this study at every visit after receiving all scheduled vaccinations. - Participants will be asked whether they are willing to participate in the procedures. Female participants will have a pregnancy test. - Researchers will put about 60 mosquitoes in 2 or 3 cups (20 or 30 in each cup). They will hold each cup to the participant s leg or arm so the mosquitoes can bite. These mosquitoes do not carry germs and will take about 3 drops of blood total. - Participants will get a cream for any swelling or itching. - Participants will be checked the next day for any discomfort. - Participants may take part in this feeding test multiple times, if they are willing. - If participants have malaria parasites in their blood, they may be asked to take part in another study. For this, they will sleep alone in their hut the night after the feeding test. A study team will set up nets to collect mosquitoes that may have bitten the participant overnight.
There are compelling medical and public health reasons to reduce unnecessary consumption of antimalarials and strong evidence to support the use of RDTs in malaria case management. The primary study hypothesis to be tested is that clients who know they will receive a subsidy conditional on a positive test are more likely to opt for testing before deciding which drug to buy. The primary endpoint is whether subjects choose to be tested for malaria with a rapid diagnostic test. The secondary endpoint is whether they purchased an artemisinin combination therapy (ACT) or not. The primary outcome of interest is to compare the proportion of participants who choose to receive a free malaria diagnostic test when they can receive a subsidy for a discounted drug conditional on a positive test (Group A compared to Group B) compared to those without the offer of a conditional subsidy. The investigators will use an experimental design that randomly assigns clients to one of four groups. Field workers will canvas households in the study area looking for individuals who have fever or history of fever or illness in the last 24 hours (current illness) who have not yet taken drugs or sought treatment outside the home. Clients who meet the inclusion criteria and give verbal consent to participate will be randomly assigned to one of the four groups. They will be given the location and contact information for their local community health worker who can provide a malaria rapid diagnostic test if they choose to be tested. They will also complete a survey tool. One week later, the field worker will return to interview the participant and determine whether they were tested, what action they took for their illness, what medicine they purchased and how much they paid. The investigators will summarize clients' choice by the four randomized study groups.
This will be a single-centre, 5-cohort, randomized open-label, parallel-group study in healthy volunteer subjects. This study aims to provide sufficient pharmacokinetic (PK) evidence to support the safe usage of Tafenoquine (TQ) in studies and markets where the Artemisinin-based Combination Therapies (ACTs) are the standard of care for patients with Plasmodium vivax malaria (i.e., co administration with TQ). The objective of this study is to assess the pharmacokinetics, safety and tolerability of TQ when co-administered with the chosen ACTs (AL and DHA + PQP), administered concomitantly in healthy subjects. Specifically, the study will evaluate whether there are drug-drug interactions between TQ and each of the ACTs and if these interactions are considered to be clinically significant. The co-primary objectives of this study are to characterize both the effects of a 300 milligram (mg) single dose of TQ on the pharmacokinetics; changes in (area under the concentration-time curve from 0 to time t) AUC (0-t), AUC (0-infinity), and maximum observed concentration (Cmax) of each of the two Artemisinin-based Combination Therapies (ACT) according to their prescribed dose when co-administered as well as the effects of the ACTs on the PK of TQ. A total of 120 subjects (24 subjects in each of 5 cohorts) are planned to be enrolled in order to ensure a target sample size of at least 22 subjects completing the study per cohort. All subjects will arrive in the unit at least 24 hours prior to dosing and be discharged after 72-hour post first dose assessments have been completed. Subjects will return for outpatient visits on Days 7, 14, 21, 28, and 56 after first dose.
The purpose of this study is to assess two new malaria vaccines, ChAd63 RH5 and MVA RH5, at different doses and alone or in combination. The study will enable us to assess the safety of the vaccines and the extent of the immune response in healthy volunteers. We will do this by giving volunteers one or two vaccinations, doing blood tests and collecting information about any symptoms that occur after vaccination. This is the first trial to use these vaccines in humans.
The proposed study is a Phase 1 study with controlled human malaria infection (CHMI) designed primarily to evaluate the safety of the FMP012 combined with AS01B adjuvant system. AS01B is a proprietary current good manufacturing practices (cGMP) grade adjuvant manufactured by GlaxoSmithKline (GSK) Biologicals. It is a formulation based on liposomes mixed with the immunostimulants monophosphoryl lipid (MPL) and Quillaja saponaria (QS)-21. The immunogenicity and efficacy of this new candidate vaccine will be evaluated in addition to safety.