11,869 results match your criteria: "Department of Clinical Research London School of Hygiene & Tropical Medicine London[Affiliation]"

Background: Tuberculosis vaccine trials using disease as the primary endpoint are large, time consuming, and expensive. An earlier immunological measure of the protection against disease would accelerate tuberculosis vaccine development. We aimed to assess whether the effectiveness of the Bacillus Calmette-Guérin (BCG) vaccine for prevention of Mycobacterium tuberculosis infection was consistent with that for prevention of tuberculosis disease.

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Microbiology reference laboratories perform a crucial role within public health systems. This role was especially evident during the COVID-19 pandemic. In this Viewpoint, we emphasise the importance of microbiology reference laboratories and highlight the types of digital data and expertise they provide, which benefit national and international public health.

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Since the COVID-19 pandemic, considerable advances have been made to improve epidemic preparedness by accelerating diagnostics, therapeutics, and vaccine development. However, we argue that it is crucial to make equivalent efforts in the field of outbreak analytics to help ensure reliable, evidence-based decision making. To explore the challenges and key priorities in the field of outbreak analytics, the Epiverse-TRACE initiative brought together a multidisciplinary group of experts, including field epidemiologists, data scientists, academics, and software engineers from public health institutions across multiple countries.

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The disadvantaged populations eGFR (estimated glomerular filtration rate) epidemiology (DEGREE) study was designed to gain insight into the burden of chronic kidney disease (CKD) of undetermined cause (CKDu) using standard protocols to estimate the general-population prevalence of low eGFR internationally. Therefore, we estimated the age-standardized prevalence of eGFR under 60 ml/min per 1.73m in adults aged 18-60, excluding participants with commonly known causes of CKD; an ACR (albumin/creatinine ratio) over 300 mg/g or equivalent, or self-reported or measured (HT) hypertension or (DM) diabetes mellitus, stratified by sex and location.

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Whole-genome sequencing surveillance of Siberian tick-borne encephalitis virus (TBEV) identifies an additional lineage in Kyrgyzstan.

Virus Res

January 2025

UK Health Security Agency, Science Group, Porton Down, Salisbury, UK; Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK; Health Protection Research Unit (HPRU) in Emerging and Zoonotic Infections, Institute of Infection and Veterinary and Ecological Science, University of Liverpool, Liverpool, UK.

Tick-borne encephalitis virus (TBEV) is the most prevalent tick-borne viral disease in Europe and Asia. There are three main subtypes of the virus: European, Siberian, and Far Eastern, each of which having distinctive ecology, clinical presentation, and geographic distribution. In recent years, other TBEV subtypes have been described, namely the Himalayan and Baikalian subtypes.

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Article Synopsis
  • The study investigates the safety and immunogenicity of a TdaP vaccine for pregnant women living with HIV, aiming to protect infants from severe pertussis disease.
  • Conducted in Uganda, the trial randomly assigned 181 women (HIV-positive and HIV-negative) to receive either the TdaP or Td vaccine, evaluating immune responses in infants post-delivery.
  • Findings will provide valuable insights into the vaccine's effectiveness and safety for this specific population, contributing to better health outcomes for mothers and their babies.
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Background: Fat mass (FM) and fat-free mass (FFM) in early life are associated with later obesity and cardiometabolic disease.

Objectives: This study aimed to assess the associations of FM and FFM at birth and conditional FM and FFM accretion from 0 to 5 y with kidney outcomes at the 10-y follow-up.

Methods: The Ethiopian Infant Anthropometry and Body Composition birth cohort included term infants born in Jimma town, with a birth weight ≥1500 g, and having no congenital malformations.

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Article Synopsis
  • The text discusses the impact of pneumococcal conjugate vaccines (PCVs), specifically PCV10 and PCV13, on invasive pneumococcal disease (IPD) globally, highlighting how these vaccines have reduced the prevalence of disease caused by vaccine-type serotypes after extensive use.
  • It describes the methodology of data collection from various surveillance sites, which aimed to evaluate IPD cases that occurred five years after the vaccines were implemented, focusing on different age groups for analysis.
  • Findings indicate significant differences in serotype distribution between PCV10 and PCV13 sites; notably, certain serotypes, such as 19A and serotype 3, were prevalent in specific age groups, signaling ongoing challenges in controlling
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Background: Pneumococcal conjugate vaccines (PCVs) that are ten-valent (PCV10) and 13-valent (PCV13) became available in 2010. We evaluated their global impact on invasive pneumococcal disease (IPD) incidence in all ages.

Methods: Serotype-specific IPD cases and population denominators were obtained directly from surveillance sites using PCV10 or PCV13 in their national immunisation programmes and with a primary series uptake of at least 50%.

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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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Background: Tuberculosis (TB), caused by Mycobacterium tuberculosis, is a leading cause of infection-related deaths worldwide. Children with underdeveloped immune systems are particularly vulnerable, experiencing symptoms akin to common childhood illnesses. Early diagnosis and treatment typically yield positive outcomes.

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Background: Peripheral oxygen saturation (SpO) above 94% is typical in children in paediatric intensive critical care units (PICUs) who are receiving invasive ventilation and supplemental oxygen. In a previous report from the Oxy-PICU trial, we showed that lower (conservative) oxygenation targets (SpO 88-92%) are beneficial, showing small but statistically significant differences in duration of organ support and large but non-significant cost reductions at 30 days. In this pre-specified analysis of the Oxy-PICU trial, we compare longer-term outcomes and cost-effectiveness of conservative versus liberal (SpO >94%) oxygenation targets in children with emergency PICU admission.

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Background: Triple artemisinin-based combination therapies (TACTs) can delay the spread of antimalarial drug resistance. Artesunate-amodiaquine is widely used for uncomplicated Plasmodium falciparum malaria. We therefore aimed to determine the safety and efficacy of artemether-lumefantrine-amodiaquine and artesunate-amodiaquine with and without single low-dose primaquine for reducing gametocyte carriage and transmission to mosquitoes.

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The role of genomics in public health surveillance has been accentuated by its crucial contributions during the COVID-19 pandemic, demonstrating its potential in addressing global disease outbreaks. While Africa has made strides in expanding multi-pathogen genomic surveillance, the integration into foodborne disease (FBD) surveillance remains nascent. Here we highlight the critical components to strengthen and scale-up the integration of whole genome sequencing (WGS) in foodborne disease surveillance across the continent.

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Unlabelled: Urgent improvements in the diagnosis and management of infection are required to reach End TB goals. Conventional interferon-gamma release assays (IGRAs), such as QuantiFERON-TB Gold Plus (QFT-Plus), require substantial laboratory infrastructure and large blood volumes, limiting use in high-burden settings. The QIAreach QuantiFERON-TB (QIAreach QFT) was developed to overcome these challenges but has not previously been evaluated in field conditions in a low-income, high-burden country, or at scale in children.

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Background: Antimicrobial misuse and overuse propagate antimicrobial resistance, yet data on factors influencing antibiotic prescription decisions in low-resource settings are limited. We describe factors influencing antimicrobial prescription at a large tertiary care private not-for-profit hospital in Uganda.

Methods: We conducted a descriptive phenomenology qualitative study involving face-to-face in-depth interviews of 12 purposively selected prescribers (four intern doctors, six medical officers and two Internal Medicine physicians) in a private not-for-profit hospital in Kampala, Uganda.

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Children with sickle cell anemia (SCA) experience recurrent vaso-occlusive crises and complications, significantly impacting their health-related quality of life (HRQoL). This study determined HRQoL in 130 children aged 5 -15 years with SCA in The Gambia, compared to 130 age- and sex-matched hemoglobin AA (HbAA) children. HRQoL was measured using the Pediatric Quality of Life Inventory (PedsQL), with scores below 69.

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Background: Intestinal schistosomiasis was confirmed endemic in Mangochi District, Malawi, in May of 2018 following an unexpected encounter with discreet populations of Biomphalaria spp. freshwater snails during routine malacological surveillance activities. Since then, only limited malacological surveillance of Biomphalaria has been carried out, and so the distribution of Biomphalaria populations in this area is currently unclear.

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EGHRIN conclusions on pandemic preparedness: no whole-of-society approach without society.

BMC Health Serv Res

December 2024

KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Clinical and Epidemiological Virology, Institute for the Future, Herestraat 49, Louvain, 3000, Belgium.

Pandemic preparedness necessitates a multifaceted approach that emphasizes societal factors, such as building trust and acknowledges cultural and societal differences, with a focus on protecting vulnerable groups. To support these goals, the European Global Health Research Institutes Network has outlined a comprehensive transdisciplinary approach through a set of multilevel recommendations.

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Article Synopsis
  • The study explores the biological differences linked to PTSD by examining DNA methylation changes in blood, suggesting they could indicate susceptibility or effects of trauma.
  • Conducted by the Psychiatric Genomics Consortium, the research included nearly 5,100 participants to identify specific genetic markers associated with PTSD.
  • Results showed 11 significant CpG sites related to PTSD, with some also showing correlations between blood and brain tissue methylation, highlighting their potential role in understanding PTSD biology.
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Background: High levels of high-density lipoprotein cholesterol (HDL-C) are previously considered protective against cardiovascular diseases (CVD), but recent studies suggest an increased risk of adverse events at very high HDL-C levels in the general population. It remains to be elucidated such a relationship in diabetes, a condition with high cardiovascular risks. We examined the association of HDL-C levels with the risk of major adverse cardiovascular events (MACE) and mortality in type 2 diabetes.

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Background: Achieving equitable healthcare access for persons with disabilities is vital, as they often face various barriers that impact their health and well-being. Recognizing the importance of gender equity, this study aims to explore the specific barriers faced by women and girls with disabilities in accessing quality healthcare services in Lebanon.

Methods: A mixed-method sequential explanatory approach was employed.

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Background: Childhood is a period marked by dynamic growth. Evidence of the association between childhood linear growth and school achievement comes mostly from cross-sectional data. We assessed associations between birth length, childhood linear growth velocities, and stunting with school achievement.

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Background: Accurate growth assessment of preterm infants is essential in guiding medical care and suitable nutritional interventions. Currently, different growth references are used across hospitals in the United Arab Emirates (UAE). This study aims to compare the INTERGROWTH-21st standards with Fenton growth references regarding birth size classification and at the time of discharge in a sample of preterm infants in the UAE.

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