View clinical trials related to Plasmodium Vivax Infection.
Filter by:This is an observational safety and efficacy study on dihydroartemisinin-piperaquine in Timika, Indonesia with a 42 day follow up period.
This study specifically seeks to quantify the contribution of relapes to the burden of P. vivax infections and disease by determining on the effect of radical pre-erythrocytic and erythrocytic clearance on subsequent rates of Plasmodium spp. infection and disease in children aged 5-10 years in a treatment to re-infection study design. In order the clear liver-stage/blood-stages G6PD-normal children were randomised to receive Chloroquine (3 days, standard dose) and Coartem (3 days, standard dose) plus either i) primaquine (20 days, 0.5mg/kg) or ii) placebo (20days). These drugs were administered over a period of 4 weeks. In addition to this epidemiological data, the study will assess the natural acquisition of cellular and humoral immune responses to P. falciparum and P. vivax, thus assisting in the determination of correlates of clinical immunity to P. falciparum and P. vivax in PNG children aged 5-10 years. These data will not only be essential for development of future vaccines against P. vivax and P falciparum but provide invaluable insight into the contribution of long-lasting liver-stages to the force of infection with P. vivax that will contribute towards designing more rational approaches to the treatment of P. vivax both in the context of case management and future attempts at elimination.
The investigators hypothesize that the addition of primaquine (PQ) to both artemether-lumefantrine (AL) and chloroquine (CQ) for the treatment of Plasmodium vivax infection will result in decreased chance of relapse by about 60%. The investigators plan to assess the therapeutic efficacy of AL compared to combined AL + PQ and CQ compared to combined CQ + PQ against P. vivax infection. They also plan to determine the number of recurrent vivax episodes in patients receiving PQ compared to those who don't receive PQ. Patients aged above 1 year with symptomatic malaria presenting to health centers will be enrolled for treatment with AL, AL+PQ, CQ, or CQ+PQ for P. vivax infection. Phase 1 of the study will monitor the clinical, parasitological, and hematological parameters for P. vivax infection over a 42-day follow-up period, which will be used to evaluate drug efficacy. Phase 2 will continue monthly follow-up of these patients for one year to assess frequency of recurring vivax infections. Results from this research study will be used to assist Ethiopia in assessing their current national malaria drug policies.