Active clinical trials for "Parasitemia"

This is an open-label, adaptive study using the P. falciparum induced blood stage malaria (IBSM) model to characterise the pharmacokinetic/pharmacodynamic (PK/PD) profile and safety of MMV367 (the IMP). Up to 18 participants will be enrolled in cohorts of up to 6 participants each. The study will proceed as follows for all participants: Screening period of up to 28 days to recruit healthy adult participants. Day 0: Intravenous inoculation with approximately 2,800 viable P. falciparum-infected red blood cells. Days 1-3: Daily follow up via phone call or text message. Days 4-7: Daily site visits for clinical evaluation and blood sampling to monitor malaria parasite numbers via quantitative polymerase chain reaction (qPCR). Day 7 PM: Start of confinement within the clinical trial unit. Day 8: Administration of a single oral dose of the IMP (MMV367). Different doses of MMV367 will be administered across and within cohorts in order to effectively characterise the PK/PD relationship. Days 8-11: Regular clinical evaluation and blood sampling while confined to monitor malaria parasite numbers and measure MMV367 plasma concentration. Day 11 AM: End of confinement within clinical trial unit. Days 12-23: Outpatient follow-up for clinical evaluation and blood sampling. Day 24: Initiation of compulsory definitive antimalarial treatment with Riamet® (artemether/lumefantrine) and/or other registered antimalarials if required. Treatment will be initiated earlier than Day 24 in the event of: Insufficient parasite clearance following IMP dosing Parasite regrowth following IMP dosing Characterising the pharmacokinetic/pharmacodynamic relationship of MMV367 Participant discontinuation/withdrawal, Investigator's discretion in the interest of participant safety. Day 27: End of study visit for final clinical evaluation and to ensure complete clearance of malaria parasites.

The study will be conducted in asymptomatic pregnant women with P. falciparum parasitemia. The subjects will be given 3 day dosing regiment of the fixed-dose combination of Azithromycin and Chloroquine. Parasitological clearance rate with polymerase chain reaction data will be evaluated on Day 28 as primary endpoint.

This was a placebo controlled, randomised, double-blind, double-dummy study of the efficacy of weekly tafenoquine compared with weekly mefloquine or placebo in the chemosuppression of P. falciparum in Nyanza Province, western Kenya.

The study will examine whether prophylactic and scheduled treatment with acetaminophen and ibuprofen can decrease the maximum temperature experienced during the acute illness in children with CNS malaria.

In areas of seasonal malaria transmission, treatment of carriers of malaria parasites, whose parasitaemia persists at very low levels throughout the dry season, could be a useful strategy for malaria control in areas with a short transmission season. We did a randomized trial to compare two regimens for clearance of low level parasitaemia in the dry season.

This is a single-centre, open-label, Phase Ib study designed to assess if intravenous injection of approximately 3200 P. falciparum (NF54 strain) sporozoites can be safely administered to achieve blood-stage parasitaemia with a kinetics/PCR profile that will allow for the future characterisation of antimalarial blood-stage activity of new chemical entities in a relatively small number of participants during early drug development. Healthy, malaria-naïve adults, aged 18-55 years, will be enrolled in a maximum of 2 cohorts. Enrolment into the cohorts will proceed sequentially, with two target levels of parasitaemia, i.e., 5000 parasites/mL blood in Cohort 1 and 10000 parasites/mL blood in Cohort 2. (Based on observed levels of parasitaemia in Cohort 1, the target threshold for treatment in Cohort 2 was maintained at 5,000 p/mL (vs 10,000 p/mL in the protocol)). The 3-day antimalarial therapy regimen will be further administered and monitored until parasite clearance. Safety and tolerability will be monitored during the whole study duration.

The purpose of this study was to see if antiretroviral therapy (ART) is safe and works at getting rid of malaria in blood and to see whether one type of ART is better than another. This study may offer information for further research in looking at whether ART plays a role in the prevention and treatment of malaria.

The malaria parasite Plasmodium falciparum remains at sub-patent level throughout the dry season in areas of seasonal malaria transmission. Targeting this parasite reservoir before the transmission season could be a good strategy for malaria control. We are conducting a randomized double blind placebo controlled mass drug administration trial in eight village to clear the dry season low level parasitaemia with an ultimate aim of controlling malaria in eastern Sudan.

Malaria poses a serious burden in sub-Sahara Africa. Efforts are ongoing to scale up interventions that work. These include the use of Long Lasting Insecticidal Nets (LLIN), Intermittent Preventive Treatment in children (IPTc), and test, treat and track (TTT). There is the need, however, for mass testing, treatment and tracking (MTTT) of the whole population to reduce the parasite load before implementing the aforementioned interventions. Though, Seasonal Malaria Chemoprophylaxis (SMC) is adopted for selected localities in Ghana, the impact of such interventions could be enhanced, if associated with MTTT in order to reduce the parasite load at baseline. MTTT of children in Ghana has demonstrated a parasite load reduction from 25% to 1%. However, unanswered questions include - could this be scaled up? What proportion of the community could be covered over a given time? What would it take to accomplish large scale MTTT? In designing interventions that aim at reducing the burden of malaria in children under five, for example, MTTT has largely been left out. Adults who are not often targeted by such interventions remain reservoirs that fuel transmission. This study explores the scale-up of interventions that work using existing community volunteer teams to lower cost. These volunteers will play a surveillance role by conducting home-based management of malaria. To avoid challenges posed by stockouts, short message service (SMS) will be used to monitor the level of stocks for malaria medicine and Rapid Diagnostic Tests (RDTs). It is hypothesized that there are more asymptomatic malaria cases (those who carry the parasite but are not ill) than symptomatic cases reported by hospital records in the Pakro sub district and that, carrying out MTTT in combination with home-based management of malaria in specific communities could greatly reduce the burden. Through this study, the bottlenecks that hinder scaling-up of MTTT will be documented in order to facilitate the process.

IPT/SP was adopted in 2005 by The Ministry of Health (MoH) of Burkina Faso to replace chemoprophylaxis with CQ in pregnancy. The new strategy is being implemented but no delivery approach was defined and presumably IPT/SP will only be delivered to pregnant women presenting at ANC visits. It would be of extreme importance to ensure a better coverage and higher compliance to make the new strategy effective. In order to obtain a more efficient IPT/SP programme with a good level of compliance and coverage, several delivery approaches beside ANC should be explored. The study site will be in Pissy health district covering both peri-urban Ouagadougou city and rural areas. Participants include pregnant women irrespective of gravidity residing in the study area. The study is a prospective comparative study of 3 different approaches of delivering IPT/SP in the catchment areas of rural health facilities. The approaches will be the following: Passive health centre based delivery approach (PHC). IPT/SP will be delivered to pregnant women presenting to the health centre for ANC visits. Joint, with an advanced strategies delivery approach (JAS). In addition to passive delivery at health centres, the pregnant women will be reached during preventive activities the health staff carry out regularly in villages, such as immunization, health promotion, and even ANC visits. Community based distribution delivery approach (CBD). In addition to passive delivery at health centres, the pregnant women will be reached by traditional birth attendants (TBAs) or representatives of village women's associations (RWAs). Each approach will be implemented in a zone constituted by the catchment area of a number of health centres to achieve the required sample size. The zones will be randomly assigned to a delivery approach. The main outcomes to be measured are: a) the coverage of IPT, b) compliance, c) infection prevalence, d) Hb level, e) difficulties and constraints of each approach, f) the acceptability to population and health staff and g) the performance of each approach to deliver IPT /SP. to be able to identify a significant increase in coverage of 10%, each group should be composed of n = 3841 pregnant women. Cross sectional surveys will be carried out at the beginning, during and at the end of the study period. The study will be carried out over 24 months from June 2007.