Data on asthma aetiology in Africa are scarce. We investigated the risk factors for asthma among schoolchildren (5–17 years) in urban Uganda. We conducted a case-control study, among 555 cases and 1115 controls. Asthma was diagnosed by study clinicians. The main risk factors for asthma were tertia...ry education for fathers (adjusted OR (95% CI); 2.32 (1.71–3.16)) and mothers (1.85 (1.38–2.48)); area of residence at birth, with children born in a small town or in the city having an increased asthma risk compared to schoolchildren born in rural areas (2.16 (1.60–2.92)) and (2.79 (1.79–4.35)), respectively; father’s and mother’s history of asthma; children’s own allergic conditions; atopy; and cooking on gas/electricity. In conclusion, asthma was associated with a strong rural-town-city risk gradient, higher parental socio-economic status and urbanicity. This work provides the basis for future studies to identify specific environmental/lifestyle factors responsible for increasing asthma risk among children in urban areas in LMICs.
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Background
Asthma remains highly prevalent, with more severe symptoms in low-income to middle-income countries (LMICs) compared with high-income countries. Identifying risk factors for severe asthma symptoms can assist with improving outcomes. We aimed to determine the prevalence, severity and ris...k factors for asthma in adolescents in an LMIC.
Methods
A cross-sectional survey using the Global Asthma Network written and video questionnaires was conducted in adolescents aged 13 and 14 from randomly selected schools in Durban, South Africa, between May 2019 and June 2021.
Results
A total of 3957 adolescents (51.9% female) were included. The prevalence of lifetime, current and severe asthma was 24.6%, 13.7% and 9.1%, respectively. Of those with current and severe asthma symptoms; 38.9% (n=211/543) and 40.7% (n=147/361) had doctor-diagnosed asthma; of these, 72.0% (n=152/211) and 70.7% (n=104/147), respectively, reported using inhaled medication in the last 12 months. Short-acting beta agonists (80.4%) were more commonly used than inhaled corticosteroids (13.7%). Severe asthma was associated with: fee-paying school quintile (adjusted OR (CI)): 1.78 (1.27 to 2.48), overweight (1.60 (1.15 to 2.22)), exposure to traffic pollution (1.42 (1.11 to 1.82)), tobacco smoking (2.06 (1.15 to 3.68)), rhinoconjunctivitis (3.62 (2.80 to 4.67)) and eczema (2.24 (1.59 to 3.14)), all p<0.01.
Conclusion
Asthma prevalence in this population (13.7%) is higher than the global average (10.4%). Although common, severe asthma symptoms are underdiagnosed and associated with atopy, environmental and lifestyle factors. Equitable access to affordable essential controller inhaled medicines addressing the disproportionate burden of asthma is needed in this setting.
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he aetiology of asthma and allergic disease remains poorly understood, despite considerable research. The International Study of Asthma and Allergies in Childhood (ISAAC), was founded to maximize the value of epidemiological research into asthma and allergic disease, by establishing a standardized m...ethodology and facilitating international collaboration. Its specific aims are: 1) to describe the prevalence and severity of asthma, rhinitis and eczema in children living in different centres, and to make comparisons within and between countries; 2) to obtain baseline measures for assessment of future trends in the prevalence and severity of these diseases; and 3) to provide a framework for further aetiological research into genetic, lifestyle, environmental, and medical care factors affecting these diseases. The ISAAC design comprises three phases. Phase 1 uses core questionnaires designed to assess the prevalence and severity of asthma and allergic disease in defined populations. Phase 2 will investigate possible aetiological factors, particularly those suggested by the findings of Phase 1. Phase 3 will be a repetition of Phase 1 to assess trends in prevalence.
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Women, girls and marginalized groups who are largely dependent on natural resources for livelihoods are among the hardest hit by extreme weather patterns. These weather patterns limit their access to food, water, shelter, education and access to essential health services, including those that addres...s sexual and reproductive health and rights (SRHR), gender-based violence (GBV) and preventing harmful practices such as child marriage and female genital mutilation.
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The guidance document provides a set of indicators for assessing the status of development, implementation and monitoring of key policy interventions for prevention and control of NCDs and injuries. It promotes city-level evidence based decision-making processes to identify gaps and take appropriate...s actions to strengthen responses. Additionally, using the standardized indicators can facilitate cross-city learning, sharing best practices and lessons learnt in implementing various policy interventions.
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Healthy people, healthy animals and a healthy environment worldwide with the One Health approach.
The COVID-19 pandemic has drastically demonstrated just how close the link is between humans, animals, and the environment, and has highlighted and aggravated existing challenges. The destruction of na...tural habitats and displacement of species, trade in wild animals, resource-intensive lifestyles and conditions, non-sustainable food systems and, in particular, industrial agriculture and intensive livestock farming are the causes of the emergence of zoonoses as well as numerous other communicable and non-communicable, chronic diseases.
The One Health approach focuses precisely on such interaction between humans, animals, and the environment.
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World Humanitarian Data and Trends presents global- and country-level data-and-trend analysis about humanitarian
crises and assistance. Its purpose is to consolidate this information and present it in an accessible way, providing policymakers, researchers and humanitarian practitioners with an evid...ence base to support humanitarian policy decisions and provide context for operational decisions.
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Many low- and middle-income countries (LMICs) are undergoing an epidemiological transition. With an improvement in socioeconomic conditions and an aging population, cardiovascular diseases (CVDs), like cardiac arrhythmias, are expected to increase in these countries. However, there are limited studi...es on the epidemiology and management of cardiac arrhythmias in LMICs. This review will highlight the unique challenges and opportunities that these countries face when managing cardiac arrhythmias.
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The article "Barriers and determinants of asthma control in children and adolescents in Africa: a systematic review" analyzes factors contributing to poor asthma control in African youth. Based on studies conducted between 2014 and 2019 in Nigeria, Uganda, and South Africa, the review identifies key... challenges such as limited access to asthma diagnosis, inadequate use of inhaled corticosteroids, and environmental and socio-economic factors. It finds that urban living, older age, and concurrent allergic conditions significantly affect asthma management. The study emphasizes the need for improved diagnostic tools, better access to treatment, and tailored public health interventions to enhance asthma outcomes in African children.
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The power relations around global decisions which shape population health can be changed through new alliances and information flows. The Democratising Global Health Governance Initiative, of which WHO Watch is a project, is designed to contribute to improved population health (and health equity) th...rough new alliances and information flows.
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Le présent guide a donc pour objet de servir d’orientation de base et de point de référence pour l’élaboration d’un projet pilote de marché-santé. Si les principes énumérés dans ce guide s’appliquent de fait à tous les marchés, certains d’entre eux devront sans doute faire preuv...e de souplesse pour atteindre leurs buts. Les projets pilotes couronnés de succès sont ceux dans lesquels la communauté collabore à l’élaboration d’une vision commune d’un marché respectueux des conditions d’hygiène et de sécurité.
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This paper presents lessons learned from previous flood responses in developing countries, based on a structured review of the literature. It is intended for people working in relief and recovery operations who have to decide if, when and how to intervene after a flood.
Cancer is an emerging public health problem in sub-Saharan Africa due to population growth, ageing and westernisation of lifestyles. In this piece, we use data from Mozambique over a 50-year period to illustrate cancer epidemiological trends in low-income and middle-income countries to hypothesise ...potential circumstances and factors that could explain changes in cancer burden and to discuss surveillance weaknesses and potential improvements. This epidemiological transition deserves increasing policy attention.
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