Identification of a potential antimalarial drug candidate from a series of 2-aminopyrazines by optimization of aqueous solubility and potency across... (Publications)
blood life-cycle stage of the human malaria parasite Plasmodium falciparum. Several compounds displayed high in vivo efficacy in two different mouse models for malaria, P. berghei-infected mice and P. f
Health facility-based data on women receiving sulphadoxine-pyrimethamine during pregnancy in Tanzania: lessons to learn from a cross-sectional survey... (Publications)
data on women receiving sulphadoxine-pyrimethamine (SP) for intermittent preventive treatment of malaria during pregnancy (IPTp) was carried out at antenatal care clinics in Mkuranga and Mufindi districts [...] system (HMIS) registers, interviews with health-care workers (HWs) and district and national level malaria control program managers corroborated by inter-temporal assessment through observations at HF levels [...] measures are urgently needed to accommodate data on new interventions and...
A large <em>Plasmodium vivax</em> reservoir and little population structure in the South Pacific (Publications)
INTRODUCTION: The importance of Plasmodium vivax in malaria elimination is increasingly being recognized, yet little is known about its population size and population genetic structure in the South Pacific [...] Pacific, an area that is the focus of intensified malaria control. METHODS: We have genotyped 13 microsatellite markers in 295 P. vivax isolates from four geographically distinct sites in Papua New Guinea [...] in sharp contrast to results from regions of low P. vivax endemicity. Prior...
Achieving high coverage of larval-stage mosquito surveillance: challenges for a community-based mosquito control programme in urban Dar es Salaam,... (Publications)
BACKGROUND: Preventing malaria by controlling mosquitoes in their larval stages requires regular sensitive monitoring of vector populations and intervention coverage. The study assessed the effectiveness [...] ess of operational, community-based larval habitat surveillance systems within the Urban Malaria Control Programme (UMCP) in urban Dar es Salaam, Tanzania. METHODS: Cross-sectional surveys were carried [...] particularly low for late-stage Anopheles (2.7%, 3/111), the most direct...
Cause-specific mortality rates in sub-Saharan Africa and Bangladesh (Publications)
to noncommunicable diseases, and little malaria. HIV dominates in causes of mortality in the South African sites, which contrast with those in highly malaria endemic sites elsewhere in sub-Saharan Africa [...] diseases to mortality in sub-Saharan Africa are lower than has been previously suggested, while malaria is of relatively greater importance. CONCLUSION: The different patterns of mortality we identified
Detection of antibodies to <em>Plasmodium falciparum</em> sporozoites by employing synthetic peptides (Publications)
A new achievement in the immunodiagnosis of malaria has been reached after the knowledge of the molecular structure of some plasmodial antigens has become available. One example is given by the repetitive [...] immunosorbent assay (ELISA) for the detection of antisporozoite antibodies in individuals from malaria-endemic countries. This (NANP)40 ELISA has been employed in a longitudinal study in a rural community [...] and can be useful for monitoring the immune status of populations...
The impact of using primaquine without prior G6PD testing: a case series describing the obstacles to the medical management of haemolysis (Publications)
vivax malaria in glucose-6-phosphate dehydrogenase (G6PD) deficient individuals employs weekly primaquine dosing. This is the only recommended regimen for this patient sub-group. If national malaria programs [...] with unknown G6PD status from two different countries were prescribed primaquine as per national malaria program guidelines. During treatment both patients presented to the clinic with symptoms of anaemia
Costs and effects of the Tanzanian national voucher scheme for insecticide-treated nets (Publications)
approach in Tanzania has been to deliver a targeted subsidy for those most vulnerable to the effects of malaria while at the same time providing support to the development of the commercial ITN distribution system [...] system. In October 2004, with funds from the Global Fund to Fight AIDS Tuberculosis and Malaria, the government launched the Tanzania National Voucher Scheme (TNVS), a nationwide discounted voucher scheme [...] (and therefore nets delivered) and treated nets years. Estimates were...
A review of the frequencies of <em>Plasmodium falciparum</em> Kelch 13 artemisinin resistance mutations in Africa (Publications)
failure, except for Rwanda. These mutations present a threat to malaria control across the continent, since the greatest burden of malaria remains in Africa. A rise in the frequency of these mutations and [...] Plasmodium falciparum Kelch 13 (Pfk13), 7 years ago has provided an invaluable tool for monitoring AR in malaria endemic countries. Molecular Pfk13 surveillance revealed the resistance foci in the Greater Mekong [...] and their spread would reverse the gains made in the reduction of malar...
Emergence of FY*A(null) in a <em>Plasmodium vivax</em>-endemic region of Papua New Guinea (Publications)
Human genetic polymorphisms of this nature are common in malarious regions, and all four human malaria parasites are holoendemic below 1500 meters in PNG. At this elevation, a prominent condition cha [...] demonstrated that alpha(+)-thalassemia is associated with increased susceptibility to uncomplicated malaria among young children. It is further proposed that alpha(+)-thalassemia may facilitate so- called [...] vivax infection to act later in life as a "natural vaccine" against severe...