View clinical trials related to Malaria.
Filter by:Investigators will evaluate approaches using magnetic bead capture, isolation, and surface tension valve transfer of biomarkers to process capillary blood in order to improve the sensitivity of already approved Rapid Diagnostic Tests (RDTs) for detection of human malaria infection. Results will be compared to those obtained using unenhanced capillary blood specimens directly applied to approved malaria RDTs. Participants seeking care for possible malaria in Zambia will be recruited to enroll in the study.
The purpose of this study is to assess the immunogenicity, safety, and reactogenicity of the SB257049 candidate malaria vaccine when co-administered with Vitamin A, measles, rubella and yellow fever vaccines to children aged 6 months at the first vaccination.
The purpose of these studies is to evaluate the experimental approaches and device designs, in order to improve diagnostic performance of the RDT only. The results from the enhanced RDT methodology will be not be shared with patients or care providers, since they are as of yet, unproven.
One of the proposed ideas for malaria elimination includes the use of drugs to interrupt malaria transmission by exhausting the human reservoir of infection. Theoretically, mass treatment of an entire population with a very effective and rapid-acting drug (for instance an ACT), followed by the administration of an effective prophylactic regime during a minimum of four weeks, so as to outlast the typical development period of Plasmodium parasites in Anopheline mosquitoes, could achieve the same objective. In this respect, chloroquine (CQ) would be an appropriate candidate. This drug exhibits two conditions that make it attractive for elimination campaigns: 1) It has been demonstrated to have an excellent safety profile, allowing for its use in all age groups including pregnant women and children; and 2) Its relatively long elimination half life (t1/2=1-2 months) can provide a long post-treatment prophylactic effect. Recent evidence suggests that CQ sensitivity may be returning in places where discontinuation has reduced the drug pressure to the parasite populations. In countries such as Malawi, P. falciparum seems to have regained full sensitivity to CQ, and molecular markers of antiCQ resistance have nearly disappeared. While this does not support the reintroduction of CQ as first line therapy, it does suggest that, if proven sensitive in a given area, it could play a prophylactic role in malaria elimination strategies when used in combination with other drugs or tools. Thus, we intend to evaluate the potential role of chloroquine in preventing infections during elimination campaigns by performing a randomized, single-blind, placebo-controlled trial in asymptomatic Mozambican adults. Choosing asymptomatic parasitaemic adult males from a malaria-endemic area as our study population introduces limited risks when administering a drug with an uncertain efficacy (47% efficacious in 2001-2002). In malaria-endemic areas, this age group has a remarkably low risk of developing severe disease (irrespective of clinical symptoms), and it is foreseeable that parasitemia may be well tolerated, and in certain cases, spontaneously cleared from the individual's blood as a result of the immune system. In the unlikely event of any clinical symptomatology appearing throughout the follow-up, individuals will be examined by a study clinician and treated immediately with the country's first-line malaria treatment (artemether-lumefantrine, Coartem ®).
Feasibility of methylene blue-based combination therapy in the radical treatment of adult patients with Plasmodium vivax malaria in Ethiopia: a randomised controlled pilot trial Study rationale: Elimination has become the goal of malaria programmes in an increasing number of endemic countries and regions. Primaquine (PQ) is the only registered drug for radical cure of Plasmodium vivax malaria. Prolonged PQ-based combination therapy carries safety concerns and resistance to chloroquine (CQ) and PQ is emerging. Methylene blue (MB) has recently been shown to be safe and effective in the treatment of Plasmodium falciparum malaria in West Africa. As there is evidence for MB probably being effective against the hypnozoites of Plasmodium vivax, MB-based drug regimens could be an alternative to PQ-based combination therapy in Plasmodium vivax malaria. Study objectives: The main objective of this trial is to study the feasibility of MB-based combination therapy in patients with uncomplicated P. vivax malaria in an endemic area of Ethiopia.
Even with optimal anti-malaria therapy and supportive care, severe and cerebral malaria are associated with a 10-30% mortality rate and neurocognitive deficits in up to 33% of survivors. Adjunctive therapies that modify host immune-pathological processes may further improve outcome over that possible with anti-malarials alone. Investigators aim to evaluate a PPARĪ³ agonist ( "rosiglitazone") as adjunctive therapy for severe malaria.
The Bacillus Calmette-Guérin (BCG) vaccine, a live attenuated Mycobacterium bovis vaccine, has been used to prevent tuberculosis for almost a century, and it is still the most used vaccine in the world. There is also circumstantial and indirect evidence that BCG vaccination can protect against malaria. Investigators hypothesize that BCG vaccination can offer protection against malaria in the Controlled Human Malaria Infection (CHMI) model. A total of 20 healthy male and female volunteers will participate in this randomized, single-blind clinical trial. Volunteers will be randomized to receive either BCG vaccination (BCG vaccine SSI) (group 1, n=10) or no treatment (group 2, n=10). Five weeks after vaccination of group 1 volunteers, all volunteers will undergo a CHMI administered by the bites of five P. falciparum infected Anopheles mosquitoes.
This study will be conducted in Siaya County in Nyanza Province, western Kenya. Healthy children aged 5 months through 9 years of age living within approximately 10 km of the study clinic(s) (Siaya County Referral Hospital, or Wagai dispensary, a government health facility in Wagai division) will be eligible for participation in Part 1; healthy infants aged 5 months - 12 months inclusive will be eligible for Part 2.
This is a proof of concept study that will evaluate the feasibility of a vapor nanobubble technology (MalariSense) for malaria diagnostics. The MalariSense technology will use a highly innovative approach based on the transdermal non-invasive detection of vapor nanobubbles produced by the excitation of malaria-specific hemozoin by safe, low-energy laser pulse. The objectives of this study will be to determine the sensitivity and specificity of MalariSense in diagnosing malaria in malaria suspected cases attending a health facility in The Gambia and to identify factors influencing the diagnostic accuracy of MalariSense
This study evaluates the efficacy and safety of 3 months of malaria chemoprevention post-discharge using dihydroartemisinin piperaquine (DHA-P) in children under 5 years of age admitted with severe anemia. One half will receive monthly DHA-P and the other half placebo.