882 results match your criteria: "School of Tropical Medicine and Global Health[Affiliation]"

Information on circulating HBV (sub-)genotype, variants, and hepatitis D virus (HDV) coinfection, which vary by geographical area, is crucial for the efficient control and management of HBV. We investigated the genomic characteristics of HBV (with a prevalence of 8.1%) and the prevalence of HDV in Nigeria.

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Background: Since its resurgence in 2017, Yellow fever (YF) outbreaks have continued to occur in Nigeria despite routine immunization and the implementation of several reactive mass vaccinations. Nigeria, Africa's most populous endemic country, is considered a high-priority country for implementing the End Yellow fever Epidemics strategy.

Methods: This retrospective analysis described the epidemiological profile, trends, and factors associated with Yellow fever viral positivity in Nigeria.

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Characteristics and long-term health outcomes of the first domestic COVID-19 outbreak cases in Da Nang, Vietnam: a longitudinal cohort study.

Trop Med Health

January 2025

Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.

Background: Vietnam experienced the first COVID-19 domestic outbreak due to the Wuhan strain (B.1.1) in Da Nang from July 2020.

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A scoping review and thematic analysis of the effects of tropical cyclones on diarrheal diseases.

Environ Epidemiol

February 2025

Department of Global Health Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.

Background: Tropical cyclones pose significant health risks and can trigger outbreaks of diarrheal diseases in affected populations. Although the effects of individual hazards, such as rainfall and flooding, on diarrheal diseases are well-documented, the complex multihazard nature of tropical cyclones is less thoroughly explored. To date, no dedicated review comprehensively examines the current evidence and research on the association between tropical cyclones and diarrheal diseases.

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Background: Accurate mortality estimates help quantify and memorialise the impact of war. We used multiple data sources to estimate deaths due to traumatic injury in the Gaza Strip between Oct 7, 2023, and June 30, 2024.

Methods: We used a three-list capture-recapture analysis using data from Palestinian Ministry of Health (MoH) hospital lists, an MoH online survey, and social media obituaries.

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Background: Leptospirosis is a zoonotic bacterial infection occurring worldwide. It is of particular public health concern due to its global distribution, epidemic potential and high mortality without appropriate treatment. The method for the management of leptospirosis, particularly in severe disease, is clouded by methodological inconsistency and a lack of standardized outcome measures.

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Background: Little is known about snakebites by Naja samarensis, a species unique to the Philippines. The aim here is to describe the clinical and epidemiological characteristics of patients bitten by this medically important cobra in the Eastern Visayas.

Methods: A hospital-based prospective study analysed the features of snakebite patients attending Eastern Visayas Medical Center between June 2022 and May 2023.

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Chronic Fatigue Syndrome (CFS) is a complex disorder characterized by prolonged, unexplained fatigue and challenging diagnosis. We report the case of a 35-year-old Japanese woman with CFS who had experienced chronic fatigue since the age of 11 years. Despite treatment with modafinil, methylphenidate, levocarnitine, and ubiquinone, the symptoms persisted.

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Background Alveolar echinococcosis (AE) is a fatal zoonotic disease distributed mainly in the Northern Hemisphere. At present, its curative treatment relies on surgery, and the development of effective drugs is needed. We previously demonstrated the anti-echinococcal effect of atovaquone (ATV) as a mitochondrial complex III inhibitor in both in vitro and in vivo experiments.

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Pregnancy and neonatal outcomes in Eastern Democratic Republic of the Congo: a systematic review.

Front Glob Womens Health

December 2024

Clinical Research Department, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.

Background: Conflict is known to impact maternal and neonatal health in Eastern Democratic Republic of the Congo (DRC), an area of longstanding insecurity. We conducted a systematic review on pregnancy and neonatal outcomes in this region to provide a comprehensive overview of maternal and neonatal outcomes over a 20-year period.

Methods: We systematically searched databases, such as Medline, EMBASE, Global Health, ClinicalTrials.

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COVID-19 vaccine effectiveness (VE) studies are limited in low- and middle-income countries. A case-control study was conducted among COVID-19 and other pneumonia patients admitted to a hospital in the Philippines during the pre-Omicron and Omicron periods. To elucidate factors associated with in-hospital death, 1782 COVID-19 patients were assessed.

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Background: Mother-to-child transmission (MTCT) of Trypanosoma cruzi and hepatitis B virus (HBV) increases morbidity and disability in Latin America and the Caribbean. The tailormade comprehensive antenatal care based on the Framework for the elimination of MTCT of HIV, syphilis, hepatitis B virus (HBV), and Chagas disease (EMTCT Plus) has been implemented in the region since 2018 through a private-public partnership. This study aimed to estimate the effectiveness of the intervention in preparing MTCT of T.

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Regional action needed to halt antimalarial drug resistance in Africa.

Lancet

January 2025

Mahidol Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok 10400, Thailand; Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK; WorldWide Antimalarial Resistance Network, Oxford, UK. Electronic address:

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Since the early 2000s, malaria cases in Cambodia have declined steadily. Village malaria workers (VMWs) have played a critical role in reducing malaria transmission and progress towards malaria elimination. To prevent malaria re-establishment, however, implementation strategies need to consider carefully the changing healthcare needs in the communities as well as challenges to, and opportunities for, programme adaptation.

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Tips from an expert panel on the development of a clinical research protocol.

BMC Med Res Methodol

November 2024

School of Tropical Medicine and Global Health, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.

Article Synopsis
  • A research protocol outlines a proposed research idea, serving as a formal document submitted for approval from funding agencies, institutions, or journals, which can be particularly challenging for early-career researchers.
  • Key components of a successful research protocol include a specific title, an abstract summarizing the study, an introduction that defines the knowledge gap, a justification for its significance, clear SMART objectives, a detailed methodology, and plans for dissemination, ethics, budgets, and references.
  • This guide aims to provide practical tips and an overview of the necessary steps to help researchers create a compelling and well-structured protocol to secure approval or funding for their studies.
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Effect of a Reduced PCV10 Dose Schedule on Pneumococcal Carriage in Vietnam.

N Engl J Med

November 2024

From the Department of Pediatric Infectious Diseases, Institute of Tropical Medicine (L.-M.Y., M. Toizumi, C.I., M. Takegata), the Department of Global Health, School of Tropical Medicine and Global Health (L.-M.Y., M. Toizumi), and Nagasaki University Graduate School of Biomedical Science (L.-M.Y.), Nagasaki University, Nagasaki, and the National Institute of Infectious Diseases, Tokyo (N.K.) - both in Japan; the Department of Bacteriology, National Institute of Hygiene and Epidemiology, Hanoi (H.A.T.N., L.H.H., D.-A.D.), and the Department of Bacteriology, Pasteur Institute, Nha Trang (L.T.L., H.T.D.) - both in Vietnam; the Department of Infectious Disease Epidemiology (B.J.Q., K.Z., K.M., S.F.) and the Centre for Mathematical Modelling of Infectious Diseases (B.J.Q., K.Z., S.F.), London School of Hygiene and Tropical Medicine, and the Institute for Infection and Immunity, St. George's University (J.H.) - both in London; the Department of Infection, Immunity, and Global Health, Murdoch Children's Research Institute (M.L.N., B.D.O., E.M.D., C.S., K.M.), and the Department of Paediatrics, University of Melbourne (C.S., K.M.), Melbourne, VIC, and the Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC (C.S.) - all in Australia; and the Center for Global Health, Charité-Universitätmedizin Berlin, Berlin (S.F.).

Background: After pneumococcal disease and colonization have been controlled through vaccination campaigns, a reduced pneumococcal conjugate vaccine (PCV) schedule may be sufficient to sustain that control at reduced costs.

Methods: We investigated whether a single primary dose and booster dose (1p+1) of the 10-valent PCV (PCV10) would be noninferior to alternative dose schedules in sustaining control of carriage of pneumococcal serotypes included in the vaccine. In Nha Trang, Vietnam, an area in which PCV had not been used previously, a PCV10 catch-up campaign was conducted in which the vaccine was offered to children younger than 3 years of age, after which a cluster-randomized trial was conducted in which children received PCV10 at 2, 3, and 4 months of age (3p+0 group); at 2, 4, and 12 months of age (2p+1 group); at 2 and 12 months of age (1p+1 group); or at 12 months of age (0p+1 group).

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Background: We examined the effectiveness of a community-based intervention package that targeted pregnant women for increasing utilization of maternal health services. The intervention package was implemented in Suhum Municipality, Ghana, from March 2019 to April 2022. The package consisted of: (i) maternal health education by female and male peers; (ii) training existing health workers on maternal health; and (iii) strengthening the local community health management committees.

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Background: Respiratory syncytial virus (RSV) and influenza virus are major viral etiologies of pediatric lower respiratory tract infection, but comparative data on inpatient burden are lacking.

Methods: Using a large-scale health claims database in Japan, we identified patients under 5 years of age with a confirmed RSV or influenza diagnosis as an outpatient or inpatient between 2011 and 2022. Hospitalization rate, inpatient characteristics, various in-hospital outcomes/complications, and healthcare resource utilization were described.

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Accelerating Antimalarial Drug Discovery with a New High-Throughput Screen for Fast-Killing Compounds.

ACS Infect Dis

December 2024

Department of Molecular Infection Dynamics, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Nagasaki 852-8523, Japan.

The urgent need for rapidly acting compounds in the development of antimalarial drugs underscores the significance of such compounds in overcoming resistance issues and improving patient adherence to antimalarial treatments. The present study introduces a high-throughput screening (HTS) approach using 1536-well plates, employing lactate dehydrogenase (PfLDH) combined with nitroreductase (NTR) and fluorescent probes to evaluate inhibition of the growth of the asexual blood stage of malaria parasites. This method was adapted to efficiently assess the speed of action profiling (SAP) in a 384-well plate format, streamlining the traditionally time-consuming screening process.

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Background: The minimum mortality temperature (MMT) or MMT percentile (MMTP) is an indicator of population susceptibility to nonoptimum temperatures. MMT and MMTP change over time; however, the changing directions show region-wide heterogeneity. We examined the heterogeneity of temporal changes in MMT and MMTP across multiple communities and in multiple countries.

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Aim: High-risk deliveries are still common due to the increased use of assisted reproductive technologies. In Japan, despite centralization of labor, about half of all deliveries are still carried out in obstetric clinics. Telemedicine support is important for neonatal resuscitation involving urgent, life-altering professional judgment in local deliveries.

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Article Synopsis
  • Post-term pregnancy, reaching or exceeding 42 weeks of gestation, is linked to negative birth outcomes, and while high-income countries often induce labor, low- and middle-income countries lag behind.
  • The study aims to examine the prevalence of post-term births, associated risk factors, and their connections to small-for-gestational-age (SGA) neonates and infant mortality in middle-income settings like Brazil, Mexico, and Palestinian refugees.
  • Analyzing over 45 million live births, the research found that post-term deliveries significantly increased the risk of SGA neonates and infant mortality, suggesting the need for induction strategies to address these issues.
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