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To mark World Malaria Day on 25 April WWARN’s Dr Makoto Saito and Professor Joel Tarning from the Mahidol Oxford Tropical Medicine Research Unit and Head of WWARN Pharmacometrics presented their work on prevention and treatment of malaria in vulnerable groups at a seminar hosted by the Centre for Tropical Medicine and Global Health
A just war on bugs? Ethical differences between antimalarial resistance and antibacterial resistance
Posted 15/08/2025. In this commentary, Phaik Yeong Cheah and colleagues argue that antimalarial resistance and antibacterial resistance raise distinct ethical considerations. Unlike antibacterial resistance, mitigating antimalarial resistance has well-defined goals and does not involve environmental factors or the use of livestock. These differences make it clear that not all microbes should be addressed in the same way, and that interventions must be tailored accordingly.
Comparative virulence analysis of seven diverse strains of Orientia tsutsugamushi reveals a multifaceted and complex interplay of virulence factors responsible for disease
Posted 17/07/2025. Scrub typhus, caused by Orientia tsutsugamushi, varies in severity depending on the bacterial strain. Jeanne Salje and colleagues compared seven strains in mice and found no single predictor of virulence. Instead, disease severity results from multiple bacterial genes influencing immune responses. These findings could inform future vaccine development and diagnostics.
Single low dose primaquine to block the transmission of Plasmodium falciparum—proposed stand-alone and ACT-adapted regimens
Posted 16/07/2025. At long last and almost 13 years since the WHO recommendation, we now have evidenced-based regimens of single low dose primaquine to block the transmission of Plasmodium falciparum and help eliminate artemisinin and partner drug resistant malaria which is currently spreading rapidly across eastern Africa and beyond. By Bob Taylor
Why should we be concerned by internalised racism in global health?
Posted 15/07/2025. Internalised racism is an overlooked concept that can shape how professionals from historically marginalised backgrounds see themselves within global health. This essay by Bipin Adhikari and colleagues offers a space for reflection on how deep-rooted racial hierarchies may quietly influence identity, behaviour, and institutional culture. Advancing equity in global health also means understanding how these patterns take hold within us.
Optimization of heat inactivation protocols for Orientia and Rickettsia species
Posted 30/07/2025. Stuart Blacksell and colleagues evaluated heat inactivation of Orientia tsutsugamushi, Rickettsia typhi, R. conorii, and R. honei at 56 °C, 80 °C, and 90 °C for varying times. All were inactivated at 56 °C for 5 minutes. O. tsutsugamushi showed greater reduction, with time–temperature effects differing by species, highlighting important pathogen‑specific heat‑treatment requirements for biosafety purposes.
Over the counter use of topical corticosteroid for skin conditions among patients before attending skin specialist clinic in Nepal: A qualitative study
Posted 29/07/2025. Why do many patients arrive at skin clinics only after their conditions worsen, despite early treatment? This study from Nepal reveals how over-the-counter steroid use, informal networks, convenience, and customary practices shape care-seeking for skin conditions. These factors also mirror patterns seen in over-the-counter antimicrobial use. By Bipin Adhikari.
Risk factors and mitigation strategies of laboratory-acquired infections in research and clinical laboratories worldwide: a systematic review
Posted 01/08/2025. Causes of laboratory‑acquired infections and pathogen escapes are often under‑reported. A review from 2000–2024 identified 712 cases and 17 deaths. Common incidents included needlestick injuries and PPE failures. Research laboratories reported more decontamination issues, while clinical laboratories faced sample‑handling risks. These findings support targeted improvements in laboratory risk management practices. By Sandhya Dhawan
Hide and seek with falsified medicines: Current challenges and physico-chemical and biological approaches for tracing the origin of trafficked products
Posted 28/05/2025. The trade in falsified medical products is a major public health threat and also a huge, profitable business. Despite detection methods, tracing their origin remains difficult. Cathrin Hauk and colleagues explore analytical techniques adapted from other fields such as food, drug, and wildlife investigation to help identify their sources and empower enforcement efforts.
Genetic surveillance of Plasmodium falciparum populations following treatment policy revisions in the Greater Mekong Subregion
Posted 27/05/2025. The GenRe-Mekong project analysed 5,982 Plasmodium falciparum samples in the Greater Mekong Subregion (2017–2022), using genetic surveillance to inform malaria control. A sharp decline in piperaquine-resistant strains followed drug policy changes, highlighting how real-time genetic data can support timely, evidence-based responses to shifting malaria threats. By Varanya Wasakul
Operational evaluation of the deployment of Malaria/CRP Duo and Dengue Duo rapid diagnostic tests for the management of febrile illness by village malaria workers in rural Cambodia
Posted 23/05/2025. Village malaria workers in rural Cambodia provide essential early diagnosis and treatment; however, their importance is diminishing following a significant decline in malaria. James Callery and colleagues explore the potential expansion of their roles to ensure that febrile patients continue to utilise their services until local malaria elimination is achieved and the risk of reimportation subsides.
A comparison of national seasonal influenza treatment guidelines across the Asia Pacific region
Posted 21/05/2025. Seasonal influenza remains a major health burden in Asia. Our new comparative analysis reviews national influenza treatment guidelines across Asia Pacific countries, finding significant variation in availability, rigour, and recommendations. Our findings reveal key opportunities to strengthen evidence-informed, systematic guideline development as part of national and regional influenza preparedness and response. By Ellen Beer.
The impact of mass screening and treatment interventions on malaria incidence and prevalence: a retrospective analysis of a malaria elimination programme in eastern Myanmar, and systematic review and meta-analysis
Posted 20/05/2025. Targeted interventions are often necessary to eliminate malaria, but some are more effective than others. Jade Rae and colleagues investigated the impact of village-level mass screening and treatment interventions, highlighting key factors that influence the effectiveness of targeted malaria interventions, including baseline endemicity, population demographics, and the timing and uptake of the intervention.
Cutaneous leishmaniasis in Afghanistan
Posted 13/05/2025. Cutaneous leishmaniasis (CL) is a very neglected tropical disease. Afghanistan has an exceptionally high CL burden fueled by war and poverty. This review focuses on the clinical and epidemiological aspects of CL and highlights the need to grow the research culture so evidence can inform policy. By Bob Taylor
How do study participants want to be informed about study results: Findings from a malaria trial in Cambodia, Ethiopia, Pakistan, and Indonesia
Posted 13/05/2025. Patient interest in receiving clinical trial results varies widely across countries, underscoring that one-size-fits-all strategies fall short. This study, embedded in an antimalarial trial, explores locally tailored dissemination approaches shaped by patient preferences and stakeholder input offering essential guidance for ethical result sharing in diverse global health settings. By Bipin Adhikari
Effect of a novel house design (star home) on indoor malaria mosquito abundance in rural Tanzania: secondary outcomes of an open-label, household, randomised controlled trial
Posted 23/04/2025. A novel screened house design with bedrooms on the second storey reduced indoor mosquito abundance (51% less Anopheles gambiae; 61% less Culex species) and were 0·5°C cooler compared with traditional houses in Mtwara, Tanzania. By Lorenz Von Seidlein
Call for a fairer approach to authorship in publishing biomedical research
Posted 11/04/2025. Phaik Yeong Cheah and Michael Parker advocate for fairer authorship in collaborative biomedical research to enhance equity and inclusiveness. They highlight how current practices overlook contributors and discuss challenges in authorship decisions, including project size, multidisciplinary complexity, and the varied roles of researchers at different stages.
Validating a web application’s use of genetic distance to determine helminth species boundaries and aid in identification
Posted 26/03/2025. Helminth species identification is challenging due to their diversity. Abigail Hui En Chan, Sompob Saralamba and their team developed ABIapp, a user-friendly R/Shiny application that helps researchers visualize taxonomic boundaries using genetic distance data. With up to 76% accuracy, ABIapp outperforms existing web-based tools, providing a valuable resource for helminth research.
Comparing HemoCue® and Quantitative Buffy Coat® and Coulter Counter-measured haemoglobin concentrations in African children with acute uncomplicated malaria: a Bland–Altman analysis
Posted 19/03/2025. Malaria studies often involve blood transfusion to severe malarial anaemic children. Accurate Anaemia diagnosis is crucial for effective management. Hence, important to determine the level of agreement among haemoglobin concentrations measurement methods. HemoCue® should be used with caution in settings where decisions about blood transfusions are made. By Mavuto Mukaka
Tracing epistemic injustice in global antimicrobial resistance research
Posted 14/03/2025. This commentary explores whether there is epistemic injustice in global antimicrobial resistance (AMR) research – who sets priorities, who produces knowledge, and which types of knowledge are valued. Prof Phaik Yeong Cheah and colleagues argue that epistemic injustice may have created blind spots in policy. Addressing this requires a commitment to diversity, equity, and inclusion.
Submicroscopic malaria in pregnancy and associated adverse pregnancy events: A case-cohort study of 4,352 women on the Thailand–Myanmar border
Posted 11/03/2025. Malaria is known to be dangerous for pregnant women and their developing babies. But how much malaria is too much malaria? Using an ultra-sensitive PCR method that detects one parasite per drop of blood, Mary Ellen Gilder and SMRU colleagues found that even infections with very few parasites are associated with adverse pregnancy outcomes.