BACKGROUND In areas of seasonal malaria transmission, treatment of asymptomatic carriers of malaria parasites, whose parasitaemia persists at low densities throughout the dry season, could be a useful strategy for malaria control. We carried out a randomized trial to compare two drug regimens for clearance of parasitaemia in order to identify the optimum regimen for use in mass drug administrat...

Context New approaches are needed for malaria control where the burden has remained high despite scaled up coverage of long-lasting insecticide-treated nets (LLIN) and prompt access to artemisinin-based combination therapies (ACTs). Bigira and colleagues evaluated three regimens for chemoprevention of malaria in young children in eastern Uganda, in an area of very high yearround malaria transmi...

Malaria infections undetectable by microscopy but detectable by Polymerase Chain Reaction (PCR) (submicroscopic malaria) are common in endemic areas like Ghana. Submicroscopic malaria has been linked with severe pregnancy outcomes as well as contributing to malaria transmission. In this cross-sectional study 872 consenting pregnant women (gestation ≥ 20 weeks) were recruited from 8 hospitals in...

Sulfadoxine/pyrimethamine (SP) is increasingly used against malaria in sub-Saharan Africa because of chloroquine resistance. However, chloroquine may have a beneficial antipyretic effect. We therefore compared the combination of SP plus chloroquine, chloroquine alone, SP alone, and SP plus paracetamol in the treatment of uncomplicated Plasmodium falciparum malaria in 175 Tanzanian children (1-4...

INTRODUCTION Although the government of Yemen changed the national policy for treating malaria in November 2005 from chloroquine to combination drugs in the form of artesunate + sulphadoxine-pyrimethamine (SP) as first line and lumefantrine + artemether as second line treatment for uncomplicated malaria, clinicians in public and private health facilities continued to prescribe chloroquine becau...

This study investigated unlicensed drug outlets' practices for the management of malaria in the rural district of Butaleja, Uganda. A qualitative design using semistructured interviews was used. Interviews were recorded, translated, transcribed, and analyzed using thematic analysis. A total of 75 vendors, representing 85% of the outlets in the study area, were interviewed. Most of the vendors w...

UNLABELLED Sulfadoxine-pyrimethamine (SP) inhibits folate metabolism by the malaria parasite. We investigated the association between folate levels and SP failure in pregnant women. Data from a trial to assess the effect that folate supplementation has on SP failure in 467 pregnant women were analyzed. Plasma folate levels were determined at enrollment and at day 7. High baseline folate levels,...

The dihydropteroate synthase (dhps) genes of 44 P. malariae strains from four Asian countries were isolated. Only a limited number of polymorphisms were observed. Comparison with homologous mutations in other Plasmodium species showed that these polymorphisms are unlikely to be associated with sulfadoxine resistance.

Background: Cellular level of enzyme activity can serve as a reliable biomarker in the event of environmental/chemical insults. Objectives: The present study investigated time-dependent alterations of erythrocyte glutathione S-transferase (Ery-GST) activity of non-malarious guinea pigs (Cavia tschudii) administered with pyrimethamine/sulfadoxine and artemether/lumefantrine combination therapies...