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NCT ID: NCT03384498 Recruiting - Clinical trials for Plasmodium Falciparum

Malaria Genetic Surveillance

Start date: October 2016
Phase: N/A
Study type: Observational

This study is to determine the prevalence and geographical distribution of antimalarial drug resistance-linked genetic mutations in clinical P. falciparum infections in the Greater Mekong Subregion

NCT ID: NCT03343431 Not yet recruiting - Pregnancy Clinical Trials

Antiviral Prophylaxis and Infant Vaccination to Prevent Perinatal Hepatitis B Infection

Start date: December 1, 2017
Phase: Phase 3
Study type: Interventional

Most new hepatitis B virus (HBV) infections are acquired perinatally. In this study, pregnant women with HBsAg and HBeAg will receive tenofovir disoproxil fumarate during the last trimester of pregnancy and for two months following delivery. Their infants will receive hepatitis B (HB) immunization, starting with a first dose soon after birth. We hypothesize that the risk of mother-to-child transmission of HBV will be lower than 2%. The results of the study will help define policy to manage HBV infected pregnant women to prevent perinatal transmission.

NCT ID: NCT03278431 Recruiting - Hookworm Infection Clinical Trials

Triple Combinations Against Hookworm Infections in Lao

Start date: September 15, 2017
Phase: Phase 4
Study type: Interventional

More than one billion people are infected with soil-transmitted helminths (STH, A. lumbricoides, hookworm or Trichuris trichiura). Preventive chemotherapy - i.e. annual or biannual treatment of at-risk populations with albendazole or mebendazole is the current strategy against STH. However, the efficacy of both drugs is only moderate against hookworm and low against T. trichiura. For increasing the efficacy and to avoid drug resistance, new drugs or the combination of different drugs is the way forward. In this randomised controlled trial, we assess the efficacy (based on cure rates) of different drug combinations in school-aged children in Lao. 420 hookworm positive children will be treated: 140 with albendazole-oxantel pamoate, 140 with albendazole-pyrantel pamoate-oxantel pamoate treatment arms, 70 with pyrantel pamoate-oxantel pamoate and 70 with mebendazole-pyrantel pamoate-oxantel pamoate. Two stool samples will be collected at baseline and follow-up (14-21 days after treatment) and analysed with Kato-Katz.

NCT ID: NCT03241316 Recruiting - Antibiotic Use Clinical Trials

Antibiotics and Activity Spaces: An Exploratory Study of Behaviour, Marginalisation, and Knowledge Diffusion

Start date: November 15, 2017
Phase: N/A
Study type: Observational

The investigators will conduct two rural surveys in Thailand and Lao PDR to improve the understanding of antibiotic-related health behaviour among the general population. One survey will capture a cross-section of health behaviours that is representative for the rural population in Chiang Rai (Thailand) and Salavan (Lao PDR), the other survey will create a two round village-level panel data set to study the evolution of health behaviours in the context of public engagement activities. The investigators will also collect complementary data about village-level infrastructure through observational check-lists, and collect secondary data on patient load from primary care units catering to their survey villages. As part of the questionnaire testing process, the investigators will conduct (and collect as primary data) cognitive interviews to improve the survey tool, to interpret their data, and to justify their methodological choices.

NCT ID: NCT02802813 Recruiting - Plasmodium Vivax Clinical Trials

P.Vivax Treatment Trial

Lao Pv
Start date: June 2016
Phase: Phase 1/Phase 2
Study type: Interventional

This study aims to determine whether a 14 day course of 0.5 mg/kg/day primaquine can eliminate subclinical P. vivax infections detected by high volume ultra-sensitive PCR (uPCR).

NCT ID: NCT02453308 Recruiting - Malaria, Falciparum Clinical Trials

A Study by the Tracking Resistance to Artemisinin Collaboration (TRAC)

Start date: August 2015
Phase: Phase 2/Phase 3
Study type: Interventional

This study is an open-label randomised trial comparing standard ACT treatment with matching triple artemisinin-based combination therapies (TACTs), evaluating efficacy in safety and tolerability. The estimated total sample size is 2040 patients from 16 sites in Asia and 1 site in Africa. There are 2 arm study groups that have 2 treatment arms each. Study group A: A.1: Artemether-lumefantrine for 3 days. versus: A.2: Artemether-lumefantrine for 3 days plus Amodiaquine for 3 days. Study group B: B.1: Dihydroartemisinin-piperaquine for 3 days. versus: B.2: Dihydroartemisinin-piperaquine for 3 days plus Mefloquine hydrochloride for 3 days. Study group C: C.1: Artesunate-mefloquine for 3 days versus: C.2: Dihydroartemisinin-piperaquine for 3 days plus Mefloquine hydrochloride for 3 days. According to the WHO guideline, all patients except for children under the age of 1 year or a weight below 10 kilograms will also be treated with a single dose of low dose primaquine.

NCT ID: NCT02428647 Active, not recruiting - Diarrhea Clinical Trials

Lao Zinc Study: Effects of Two Forms of Daily Preventive Zinc Versus Therapeutic Zinc Supplementation

Start date: September 2015
Phase: N/A
Study type: Interventional

The study will be conducted as a community-based, randomized, placebo-controlled, trial with four study groups. The overall objective of the study is to determine the optimal method for delivering zinc to young children, both for the prevention of zinc deficiency and treatment of diarrhea. In particular, the investigators plan to compare the impact on physical growth, morbidity, micronutrient status, immune function, environmental enteric dysfunction, parasite burden and hair cortisol concentration of: 1) daily preventive zinc supplementation as a micronutrient powder (MNP); 2) placebo powders; 3) daily preventive zinc supplementation as dispersible tablets; 4) therapeutic zinc supplementation as dispersible tablets given in relation to episodes of diarrhea. In addition to the major outcomes mentioned above, the investigators will monitor adherence to the interventions, neuro-behavioral development, and the occurrence of any adverse events.

NCT ID: NCT02128139 Not yet recruiting - Clinical trials for Infective Endocarditis

Infective Endocarditis in Developing Countries, a Prospective, Observational, Multicentre Study

Start date: June 2014
Phase: N/A
Study type: Observational

Introduction. Comprehensive data on infective endocarditis in developing countries are scarce. Objectives: Description of the characteristics (clinical and microbiological) and assessment of the outcomes of infective endocarditis in low-income countries. Methods : Prospective, Observational, Multicentre study. Inclusion criteria: patients aged over 1 year fulfilling the modified Duke criteria for infective endocarditis. Exclusion criteria: patient included during a previous infective endocarditis episode. Outcomes measures: Mortality at 6 months follow-up; mortality at 1 month follow-up; access to antibiotic treatment (modalities and duration), hospital length of stay and reason for discharge, and cardiac surgery when indicated. Duration: One year (June 2014- June 2015)

NCT ID: NCT01872702 Completed - Clinical trials for Plasmodium Falciparum Malaria

Targeted Chemo-elimination (TCE) of Malaria

Start date: April 2013
Phase: N/A
Study type: Interventional

The overall aim of this study is two fold: 1. to pilot targeted chemo-elimination of plasmodium falciparum malaria in known areas of artemisinin resistance in South East Asia. 2. to understand the micro-epidemiology of malaria in these areas; chiefly, the prevalence and importance to on-going transmission of sub-clinical p.f malaria infections.

NCT ID: NCT01350856 Completed - Falciparum Malaria Clinical Trials

Tracking Resistance to Artemisinin (TRAC)

Start date: May 2011
Phase: Phase 4
Study type: Interventional

Because the artemisinins are the most potent antimalarial drugs, the reduction in parasite numbers is rapid. Therefore, early measures of reducing parasite counts are needed. This study will look at conventional markers of parasite reduction e.g. parasite clearance time, parasite reduction ratio, and the time to achieve a fall of 50%, 90% and 99% of the pre-treatment parasitaemia. Defining artemisinin resistance requires the use of artesunate (AS) alone because it is now appreciated that the partner drug in a combination treatment has a significant impact on the rate of parasite clearance. This study will dose patients for 3 days with AS alone (or longer until parasites clear) and measure the parasite count frequently in order to be able to define an accurate regression line of a graph of the natural logarithm of the parasite count (Y axis) versus time (X axis). This will be followed by a full course of an artemisinin combination therapy (ACT). Two different dose regimens of artesunate will be compared at all sites except those in western Cambodia, as unpublished observations from the Thai-Myanmar border suggest the standard lower daily dose of 2mg/kg may enable the earlier detection of low level resistance than a 4mg/kg daily dose.