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NCT ID: NCT03660839 Recruiting - Clinical trials for Plasmodium Falciparum Infection

Study to Investigate the Clinical and Parasiticidal Activity and Pharmacokinetics of Different Doses of Artefenomel and Ferroquine in Patients With Uncomplicated Plasmodium Falciparum Malaria

Start date: September 5, 2018
Phase: Phase 2
Study type: Interventional

Primary Objective: To show the contribution of OZ439 to the clinical and parasiticidal effect of OZ439/FQ combination by analyzing exposure-response of OZ439 measured by Day 28 polymerase chain reaction (PCR)-corrected adequate clinical and parasitological response (ACPR) for the effect and the AUC of OZ439 as PK predictor. Secondary Objective(s): - To evaluate the dose response of OZ439 combined with FQ on PCR-corrected ACPR and crude Day 28 ACPR, and on other secondary endpoints. - To evaluate the safety and tolerability of different dosages of OZ439 in combination with FQ and FQ alone. - To characterize the PK of OZ439 in plasma, and of FQ and its active metabolite SSR97213 in blood.

NCT ID: NCT03303963 Recruiting - Clinical trials for Tuberculosis, Multidrug-Resistant

DIAgnostics for Multidrug Resistant Tuberculosis in Africa

Start date: May 4, 2017
Study type: Observational

Recent advances in molecular diagnostics of tuberculosis, especially the GeneXpert Mycobacterium tuberculosis/Rifampicin test have reduced the time to diagnose Rifampicin Resistant Tuberculosis (RR-TB) but only rifampicin resistance is diagnosed, leading to presumptive diagnosis of resistance to isoniazid and maybe other drugs. Thus in low and middle income countries, most drug sensitivity testing relies on phenotypic drug resistance testing, which takes up to 4 months. In addition, currently, culture on monthly sputum samples is recommended by the World Health Organization for follow-up of Rifampicin Resistant Tuberculosis patients under treatment. Unfortunately, culture is often not locally available and samples need to be transported from field to culture laboratories. The associated transport delays lead to high rates of contamination and false negative culture, particularly in laboratories in low resource settings. Many gaps for the diagnosis and management of RR-TB patients still need to be addressed and the DIAMA project (DIAgnostics for Multidrug resistant tuberculosis in Africa) study aims to address some of them.

NCT ID: NCT03231449 Active, not recruiting - Stroke Clinical Trials

A Survey of Hospitalizations in Cardiology Units in Sub-Saharan Africa

Start date: February 1, 2017
Study type: Observational

FEVRIER study is an observatory of hospitalizations in cardiology units in sub-Saharan Africa.

NCT ID: NCT03044899 Completed - Surgery Clinical Trials

African Surgical Outcomes Study (ASOS)

Start date: February 1, 2016
Phase: N/A
Study type: Observational [Patient Registry]

STUDY OBJECTIVE To confirm the incidence of in-hospital postoperative complications in adult surgical patients in Africa. STUDY DESIGN Seven day, African national multi-centre prospective observational cohort study of adult (≥18 years) patients undergoing surgery. Patients will be followed up for a maximum of 30 days. We will follow the original International Surgical Outcomes Study (ISOS) study design. The primary outcome is in-hospital postoperative complications in adult surgical patients in Africa. Secondary outcomes include in-hospital mortality and the relationship between postoperative complications and postoperative mortality. The intention is to present a representative sample of surgical outcomes across all African countries. This study will run between February and March 2016.

NCT ID: NCT03014167 Recruiting - Helminthiasis Clinical Trials

Field Studies on the Feasibility of Interrupting the Transmission of Soil-transmitted Helminths (STH)

Start date: October 4, 2017
Phase: Phase 4
Study type: Interventional

Over 1.5 billion people are infected with soil-transmitted helminths (STH). Global STH guidelines recommend MDA (mass drug administration) of albendazole or mebendazole to targeted populations, including pre-school age children and school-age children. However mathematical models suggests that current MDA strategies are not sufficient for interrupting disease transmission in most areas. Meanwhile many lymphatic filariasis (LF) programs have successfully treated entire populations with albendazole (in combination with ivermectin or diethylcarbamazine) and are transitioning to a state of post-MDA surveillance. This project will conduct a series of community-based cluster randomized trials in India, Malawi, and Benin to determine if maintaining three years of MDA with albendazole to entire communities following the cessation of LF programs can interrupt STH transmission in focal geographic areas. Additionally, this study aims to compare the efficacy of community-wide MDA versus targeted MDA of children in interrupting the transmission of STH. Nested implementation science research will be used to optimize the intervention, identify contextual factors influencing trial efficacy, and evaluate the feasibility of sustaining and scaling community-wide MDA for STH. These data will provide evidence necessary to inform future guidelines, policies, and operational plans as country partners engage in intensified approaches to eliminate these disabling diseases.

NCT ID: NCT02979080 Active, not recruiting - Iron Absorption Clinical Trials

Iron Long-Term Labelling Study Benin

Start date: June 10, 2017
Phase: N/A
Study type: Interventional

Conventional indirect indicators of iron status, using serum and red blood cell biomarkers, are confounded by inflammation from common infections in sub-Saharan Africa, a region with a high prevalence of iron deficiency, making the assessment of iron balance and efficiency of iron intervention difficult. A potential reference method to quantify iron absorption and requirements using isotope dilution measurements in women living in areas with high burden of infection should be developed and validated within this project. The new method will allow accurate measurement of long term oral iron absorption and the estimation of iron requirements, potentially providing fundamental guidance for supplementation and fortification programs in sub-Saharan Africa. In a case series with four months' preventative iron supplementation intervention imbedded between a four months' control period prior intervention and a four months' control period after intervention, we will follow a group of 63 women. During the intervention period, the women will receive 50 mg Fe as ferrous sulfate tablets every day for 120 d. In total, the women will give 9 blood samples (day 1, 60 120, 150, 180, 210, 240, 300 and 360) for the de-termination of the isotopic composition and iron status biomarkers and 5 stool samples (day 1, 120, 180, 240 and 360) for the detection of soil transmitted helminths and gut inflammation. This design will allow the measurement of the isotopic iron dilution to assess the total oral iron absorption during the intervention period in comparison with the control periods without the administration of additional iron isotopes.

NCT ID: NCT02810678 Active, not recruiting - Clinical trials for Latent Tuberculosis Infection

Enhancing the Public Health Impact of Latent Tuberculosis (TB) Infection Diagnosis and Treatment

Start date: July 2016
Phase: N/A
Study type: Interventional

The study is a pragmatic cluster randomized trial that is being conducted in 5 countries, with sites in 4 cities in Canada, Benin, Ghana, Indonesia and Vietnam. The unit of randomization is the health facility (24 health facilities randomized). The trial tests a complex intervention-a two phase programmatic public health package which includes a standardized public health evaluation and analysis, to identify problems and barriers limiting Latent Tuberculosis Infection diagnosis and treatment among close contacts of active Tuberculosis cases. This will be followed by implementation of appropriate solutions and strengthening of the LTBI clinical program. The primary objective will be to estimate the increase the number of household contacts initiating LTBI treatment per newly diagnosed index patient, within 3 months of diagnosis of the index patient. A secondary objective is to evaluate the cost effectiveness of this two phase intervention. If successful, this approach can be expanded throughout these countries. After initial preparations, including administrative and ethical review, all participating sites will be randomized to intervention or control. Immediately after this, Phase 1 will begin in intervention sites with the standardized public health evaluation to identify barriers to LTBI diagnosis and treatment initiation and the selection of solutions to be used in Phase 2. To ensure standardization of data gathering research staff will use (i) current indicators of the Latent Tuberculosis Infection cascade of care in intervention facilities (number of contacts per index case registered, investigated, started on treatment and completing treatment) and (ii) interviewer administered questionnaires for patients with active pulmonary Tuberculosis, adult and child household contacts and clinic staff. These questionnaires will assess latent Tuberculosis-related knowledge, attitudes and beliefs from the perspective of these different participants. Results from intervention sites in Phase 1 will be analyzed, and used by the investigators, together with local public health officials, to decide on appropriate corrective solutions in each sites. Contact Investigation registries will also be developed with research staff from sites. In Phase 2, solutions for problems identified will be selected and implemented at the intervention sites, Contact Investigation registries will be implemented and clinical training will be provided to strengthen LTBI health care worker knowledge and clinical programs. Study outcomes and costs will be measured at all intervention and control sites throughout Phase 1 & 2. The main study will run for 18 months. Upon completion of the main study, a 1 year cross over study will be conducted where control sites will receive a streamlined version of the intervention and original intervention sites will be used to evaluate the sustainability of the intervention. Results will be disseminated within each country through existing links with National Tuberculosis Programs, and through international organizations such as the World Health Organization.

NCT ID: NCT02744469 Active, not recruiting - Tuberculosis Clinical Trials

Benin Population Diversity of Tuberculosis and Implications

Start date: April 12, 2016
Phase: N/A
Study type: Observational

Tuberculosis is a public health problem caused by a microbe. This microbe may differ from one patient to another. The purpose of this study is to know to which extent, each of these various microbes is involved in tuberculosis disease in Benin. This study will also find out whether the type that affects a patient, depends on patient characteristics and whether the difference affects the outcome of the treatment. Finally the study will also help to find out whether diagnostic tests are reliable for all types of the microbe. This information will be used after the study to inform decision making in order to improve tuberculosis control.

NCT ID: NCT02647489 Completed - Malaria, Antepartum Clinical Trials

Safety and Immunogenicity of the Placental Malaria Vaccine Candidate PAMVAC Variously Adjuvanted

Start date: May 2016
Phase: Phase 1
Study type: Interventional

Despite having developed robust acquired immunity against complications of malaria, women can return to a susceptible state during their first pregnancies and contribute significantly to the burden of severe malaria in highly endemic areas. Naturally acquired protection against placental malaria correlates with the presence of high concentration of immunoglobulin G molecules (IgGs) against VAR2CSA, a parasite protein of the var gene family that is essential for the binding of infected erythrocytes to CSA in the placenta. To induce high concentrations of specific IgGs, subjects will receive escalating doses of PAMVAC vaccine antigen adjuvanted with Alhydrogel, Glucopyranosyl Lipid Adjuvant-Stable Emulsion (GLA-SE) or Glucopyranosyl Lipid Adjuvant-Liposome-QS-21 Formulation (GLA-LSQ). Three injections with the same dosage and adjuvant will be done, each 28 days apart (Day 0, 28 and 56). Control subjects will receive physiological saline instead of the vaccine and dose escalation will be staggered to ensure safety during the trial.

NCT ID: NCT02497612 Recruiting - Clinical trials for Plasmodium Falciparum Infection

To Evaluate the Efficacy of a Single Dose Regimen of Ferroquine and Artefenomel in Adults and Children With Uncomplicated Plasmodium Falciparum Malaria

Start date: July 25, 2015
Phase: Phase 2
Study type: Interventional

Primary Objective: To determine whether a single dose combination of OZ439 (Artefenomel)/FQ (Ferroquine) is an efficacious treatment for uncomplicated Plasmodium falciparum malaria in adults and children. Secondary Objectives: - To evaluate the efficacy of OZ439 (Artefenomel)/FQ (Ferroquine): .To determine the incidence of recrudescence and re-infection. .To determine the time to relief of fever and parasite clearance. - To evaluate the safety and tolerability of OZ439 (Artefenomel)/FQ (Ferroquine). - To evaluate the pharmacokinetics of OZ439 (Artefenomel)/FQ (Ferroquine). - To explore in vitro drug resistance of P. falciparum infecting patients >14 years old in Vietnamese sites.