Elizabeth A. Ashley, Mehul Dhorda, Rick M. Fairhurst, Chanaki Amaratunga et al.
BACKGROUND: Artemisinin resistance in Plasmodium falciparum has emerged in Southeast Asia and now poses a threat to the control and elimination of malaria. Mapping the geographic extent of resistance is essential for planning containment and elimination strategies. METHODS: Between May 2011 and Apri...
Nicholas J. White, Sasithon Pukrittayakamee, Tran Tinh Hien, M. Abul Faiz et al.
Although global morbidity and mortality have decreased substantially, malaria, a parasite infection of red blood cells, still kills roughly 2000 people per day, most of whom are children in Africa. Two factors largely account for these decreases; increased deployment of insecticide-treated bednets a...
Olivo Miotto, Roberto Amato, Elizabeth A. Ashley, Bronwyn MacInnis et al.
We report a large multicenter genome-wide association study of Plasmodium falciparum resistance to artemisinin, the frontline antimalarial drug. Across 15 locations in Southeast Asia, we identified at least 20 mutations in kelch13 (PF3D7_1343700) affecting the encoded propeller and BTB/POZ domains, ...
Sachel Mok, Elizabeth A. Ashley, Pedro Eduardo Ferreira, Lei Zhu et al.
Artemisinin resistance in Plasmodium falciparum threatens global efforts to control and eliminate malaria. Polymorphisms in the kelch domain-carrying protein K13 are associated with artemisinin resistance, but the underlying molecular mechanisms are unknown. We analyzed the in vivo transcriptomes of...
Shannon Takala‐Harrison, Christopher G. Jacob, Cesar Arze, Michael P. Cummings et al.
BACKGROUND: The emergence of artemisinin-resistant Plasmodium falciparum in Southeast Asia threatens malaria treatment efficacy. Mutations in a kelch protein encoded on P. falciparum chromosome 13 (K13) have been associated with resistance in vitro and in field samples from Cambodia. METHODS: P. fal...
Kyaw Myo Tun, Mallika Imwong, Khin Maung Lwin, Aye Aye Win et al.
BACKGROUND: Emergence of artemisinin resistance in southeast Asia poses a serious threat to the global control of Plasmodium falciparum malaria. Discovery of the K13 marker has transformed approaches to the monitoring of artemisinin resistance, allowing introduction of molecular surveillance in remo...
Arjen M. Dondorp, Sue J. Lee, M A Faiz, Saroj K. Mishra et al.
BACKGROUND: The reported case-fatality rate associated with severe malaria varies widely. Whether age is an independent risk factor is uncertain. METHODS: In a large, multicenter treatment trial conducted in Asia, the presenting manifestations and outcome of severe malaria were analyzed in relation ...
Rob W. van der Pluijm, Rupam Tripura, Richard M. Hoglund, Aung Pyae Phyo et al.
BACKGROUND: Artemisinin and partner-drug resistance in Plasmodium falciparum are major threats to malaria control and elimination. Triple artemisinin-based combination therapies (TACTs), which combine existing co-formulated ACTs with a second partner drug that is slowly eliminated, might provide eff...
Shannon Takala‐Harrison, Taane G. Clark, Christopher G. Jacob, Michael P. Cummings et al.
The recent emergence of artemisinin-resistant Plasmodium falciparum malaria in western Cambodia could threaten prospects for malaria elimination. Identification of the genetic basis of resistance would provide tools for molecular surveillance, aiding efforts to contain resistance. Clinical trials of...
Arjen M. Dondorp, Can İnce, Prakaykaew Charunwatthana, Josh Hanson et al.
BACKGROUND: This study sought to describe and quantify microcirculatory changes in the mucosal surfaces of patients with severe malaria, by direct in vivo observation using orthogonal polarization spectral (OPS) imaging. METHODS: The microcirculation in the rectal mucosa of adult patients with sever...
Kristina E. Rudd, Christopher Seymour, Adam R. Aluisio, Marc E. Augustin et al.
Importance: The quick Sequential (Sepsis-Related) Organ Failure Assessment (qSOFA) score has not been well-evaluated in low- and middle-income countries (LMICs). Objective: To assess the association of qSOFA with excess hospital death among patients with suspected infection in LMICs and to compare q...
MalariaGEN, Ambroise D. Ahouidi, Mozam Ali, Jacob Almagro‐Garcia et al.
<ns3:p> MalariaGEN is a data-sharing network that enables groups around the world to work together on the genomic epidemiology of malaria. Here we describe a new release of curated genome variation data on 7,000 <ns3:italic>Plasmodium falciparum</ns3:italic> samples from MalariaGEN partner studies i...
Bilal Ahmad Rahimi, Ammarin Thakkinstian, Nicholas J. White, Chukiat Sirivichayakul et al.
BACKGROUND: Malaria caused by Plasmodium vivax was long considered to have a low mortality, but recent reports from some geographical areas suggest that severe and complicated vivax malaria may be more common than previously thought. METHODS: The primary objective of this systematic review and meta-...
Daniel H. Paris, Mallika Imwong, Abul Faiz, Mahtabuddin Hasan et al.
A recently described loop-mediated isothermal polymerase chain reaction (LAMP) for molecular detection of Plasmodium falciparum was compared with microscopy, PfHRP2-based rapid diagnostic test (RDT), and nested polymerase chain reaction (PCR) as the "gold standard" in 115 Bangladeshi in-patients wit...
Josh Hanson, Sue J. Lee, Sanjib Mohanty, M. Abul Faiz et al.
BACKGROUND: World Health Organization treatment guidelines recommend that adults with severe malaria be admitted to an intensive care unit (ICU). However, ICU facilities are limited in the resource-poor settings where most malaria occurs. Identification of patients at greater risk of complications m...