View clinical trials related to Malaria.
Filter by:GSK Biologicals is developing in partnership with the Malaria Vaccine Initiative at PATH a candidate malaria vaccine RTS,S/AS02 for the routine immunization of infants and children living in malaria endemic areas. The vaccine would offer protection against malaria disease due to the parasite Plasmodium falciparum and also would provide protection against infection with hepatitis B virus. Studies conducted using the formulation RTS,S/AS02A (0.25 ml dose) in children and adults have shown to be safe. Currently all intramuscular vaccines in the EPI schedule are administered at a dose volume of 0.5 ml and in this context, a new variant of RTS,S/AS02D (0.5 ml dose) formulation has been composed which has the same active constituents in the same quantities as in a 0.25 ml dose of RTS,S/AS02A. In this study, RTS,S/AS02D (0.5 ml dose) was compared to the existing formulation, RTS,S/AS02A (0.25 ml dose).
The candidate malaria vaccine RTS,S/AS02A developed by GSK Biologicals demonstrated 30% efficacy against clinical episodes of malaria and approximately 58% efficacy against severe malaria disease. As a potential improvement to RTS,S/AS02A, another candidate vaccine RTS,S/AS01B is being developed in parallel in collaboration with the Walter Reed Army Institute of Research (WRAIR). This study will be the first administration of the RTS,S/AS01B vaccine to the African adults to establish safety and immunogenicity in this population. Preliminary indication of vaccine efficacy with this adjuvant will be established by monitoring the time to the first infection with Plasmodium falciparum.
Malaria is an important cause of death and serious illness among Mozambican children. Although the risk of malaria can be reduced by drugs and by impregnated bed nets, it would be helpful if children could be protected against malaria by a vaccine. GSK Biologicals is developing in partnership with Malaria Vaccine Initiative at PATH a candidate malaria vaccine RTS,S/AS02 for the routine immunization of infants and children living in malaria endemic areas. The vaccine would offer protection against malaria disease due to the parasite Plasmodium falciparum and also would provide protection against infection with hepatitis B virus. Previous studies have shown the candidate malaria vaccine RTS,S/AS02 to be safe when administered in adults and children aged 1-11 years. However, to assess if this vaccine could provide protection against malaria in children, this study has been undertaken.
GSK Biologicals is developing in partnership with the Program for Appropriate Technology in Health (PATH) Malaria Vaccine Initiative a candidate malaria vaccine for the routine immunization of infants and children living in malaria endemic areas. The vaccine would offer protection against malaria disease due to the parasite Plasmodium falciparum. The vaccine would also provide protection against infection with hepatitis B virus (HBV). This trial is being carried out following the demonstration of efficacy of a previous version of the malaria candidate vaccine in children in Mozambique: there, the vaccine demonstrated approximately 30% efficacy against clinical episodes of malaria and approximately 58% efficacy against severe malaria disease. In order to integrate the malaria vaccine into the Expanded Program on Immunization (EPI) regimen, in malaria-endemic regions, for this trial, a 0.5 ml dose of GSK 257049 vaccine has been developed. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.
To evaluate the changes in the microcirculation of the liver, kidney and spleen during acute infection in patients with malaria (cohorts 1 and 3) and other infectious diseases such as acute pyelonephritis at day 0 (within 8 hours of the treatment start), day 2 to 4 and day 28-32, using functional US with continuous infusion of a contrast agent (SonoVue, Bracco, Italy). Study hypothesis: malaria patients should exhibit a different pattern of enhancement, particularly when quantitative measurements of the SU signals is performed with destruction reperfusion kinetics.
Although the use of mosquito nets has increased in Africa, many of the nets used are in a poor state, and not an effective barrier against mosquitoes. This pilot study examines whether subsistence farmers in rural Africa can be encouraged to repair their mosquito nets and use their bednets appropriately. Attitudes and practises on sewing and net use were examined in The Gambia and an intervention developed to promote net repair. Songs and posters were used to emphasise the importance of repairing nets and their correct use, and served as aural and visual reminders to repair nets now rather than postpone this household chore. The intervention was aimed at effectively and cheaply turning a poor net into a good one.
Attempts to understand the relationship malaria transmission intensity and antimalarial drug resistance had rested mainly on mathematical models. To date, except for two studies which reported reductions in the prevalence of drug resistance in Tanzania and Zimbabwe, no other field data addressed the impact of reducing malaria transmission by the use of vector control measures on antimalarial drug resistance. Thus whether vector control decrease or increase drug resistance remains a contentious issue. The aim of this study was to investigate the impact of insecticide-treated curtains (ITCs) on clinical and parasitological outcomes in children with uncomplicated malaria treated with chloroquine (CQ), on the prevalence of genetic markers of resistance to CQ and sulphadoxine-pyrimethamine (SP) and on the ability of children to clear drug resistant parasites. The therapeutic efficacy of CQ was studied in 9 villages which used ITCs for 6-8 years and 9 villages with no history of ITC use. A cross-sectional survey was also conducted to estimate the prevalence of genetic markers of resistance to CQ and SP in asymptomatic children.
- intermittent preventive treatment with SP in children to evaluate efficacy and safety of this drug combination in children in northern Ghana
The general goal of the project is to assess the infectious status and immunity of mothers and children living in a malaria region. A major part of the study involves administering an effective antimalarial, sulfadoxine-pyrimethamine (Fansidar®), to children at the same timepoints as vaccinations, i.e. at age 3, 9 and 15 months. The main objective is to study safety, efficacy, and consequences of such a strategy in particular the ability to reduce the risk of anemia.
Quinine remains the treatment of choice of hospitalised malaria cases. The long treatment duration of 7 days, and adverse reactions often hamper its adequate use. Reducing the treatment duration by adding sulfadoxine-pyrimethamine may enhance compliance and reduce side effects. The efficacy of a 3-day treatment of quinine plus sulfadoxine-pyrimethamine for the treatment of hospitalised, uncomplicated malaria cases was assessed.