Diphtheria is caused by Corynebacterium species, mostly by toxin-producing Corynebacterium diphtheriae and rarely by toxin-producing strains of C. ulcerans and C. pseudotuberculosis. The most common type of diphtheria is classic respiratory diphtheria, whereby the exotoxin produced characteristicall...y causes the formation of a pseudomembrane in the upper respiratory tract and damages other organs, usually the myocardium and peripheral nerves. Acute respiratory obstruction, acute systemic toxicity, myocarditis and neurologic complications are the usual causes of death. The infection can also affect the skin (cutaneous diphtheria). More rarely, it can affect mucous membranes at other non-respiratory sites, such as genitalia and conjunctiva.
C. diphtheriae is transmitted from person to person by intimate respiratory and direct contact; in contrast, C. ulcerans and C. pseudotuberculosis are zoonotic infections, not transmitted person-to-person. The incubation period of C. diphtheriae is two to five days (range 1– 10 days). A person is infectious as long as virulent bacteria are present in respiratory secretions, usually two weeks without antibiotics, and seldom more than six weeks. In rare cases, chronic carriers may shed organisms for six months or more. Skin lesions are often chronic and infectious for longer periods. Effective antibiotic therapy (penicillin or erythromycin) promptly terminates shedding in about one or two days.
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The incidence and mortality of cardiovascular diseases (CVDs) in low and middle income countries (LMICs) have been increasing, while access to CVDs medicines is suboptimal. We assessed selection of essential medicines for the prevention and treatment of CVDs on national essential medicines lists (NE...MLs) of LMICs and potential determinants for selection.
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Non-communicable diseases (NCDs) pose a substantial threat to many health systems, especially in low-income and middle-income countries (LMICs) where they are already overstretched. In the past few decades, deaths from NCDs in LMICs have spiked, whereas numbers in high-income countries have stabilis...ed. Worryingly, a large proportion of deaths from NCDs (29%) in LMICs occur among people younger than 60 years compared with the proportion in high-income countries (13%). This finding has been attributed to poor access to effective and equitable health-care services in most LMICs. The threat of NCDs in LMICs was recognised by the UN 2011 High-Level Meeting, and is now featured in Sustainable Development Goal 3 in the form of reducing premature mortality from NCDs by one-third before 2030. Cardiovascular diseases (CVDs) are the leading cause of deaths from NCDs (ie, 48% of all NCDs deaths). Therefore, substantial reductions in CVDs will have a major impact on reducing the overall burden of NCDs globally. The good news is that most CVDs can be prevented by addressing the key underlying behavioural risk factors, such as physical inactivity, unhealthy diet, tobacco use, and harmful use of alcohol, through population-wide approaches. Among individuals with or at high risk of CVD, early detection and effective management with appropriate counselling and medicines can reduce cardiovascular deaths substantially.
The importance of effective treatment for CVD has been recognised in the Global NCD Action Plan 2013–20, for which one of the nine global targets is that at least 50% of eligible individuals should receive drug therapy and counselling to prevent heart attacks and strokes by 2025.5 Although admirable, this is a hard target to achieve given that secondary prevention strategies in LMICs are often unaffordable or unavailable.
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In recent decades, India has witnessed a rapidly exploding epidemic of diabetes.
Indeed, India today has the second largest number of people with diabetes in the
world. The International Diabetes Federation (IDF) estimates that there are 72.9 million people with diabetes in India in 2017, which is... projected to rise to 134.3 million by the year 2045. The prevalence of diabetes in urban India, especially in large metropolitan cities has increased from 2% in the 1970s to over 20% at present and the rural areas are also fast catching up.
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In spite of the work carried out by the EU institutions, the Member States, many cities and grassroot movements in Europe, the general public is still not engaging enough in air quality policy initiatives and the level of awareness and knowledge of the effects of poor air quality on health is often ...low.
HEAL, within its work with the EU urban air quality partnership has put together a toolkit on ‘Communicating on air quality and health – Inspiring practices, challenges and tips’, providing hands-on examples of how communication on air quality, the health links and (policy and behavioural) changes takes place, as an inspiration particularly for urban authorities wanting to communicate on clean air.
The Partnership on Air Quality was founded in 2016 with the main objective of improving air quality in cities and bringing the ‘healthy city’ higher on the local, national and EU agendas as part of the urban agenda.
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Non-communicable diseases (NCDs) account for 72% of all deaths globally and this proportion is growing. Greatest increases in NCD mortality are seen in low-income and middle-income countries (LMICs). Places that only a generation ago knew famine are
today experiencing epidemics of obesity, diabetes..., cardiovascular disease, and cancer. These epidemics reduce human capital in developing countries and their economic costs are so great that they threaten to slow and even undercut trajectories of economic and social development.
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Alcohol has historically, and continues to, hold an important role in social engagement and bonding for many. Social drinking or moderate alcohol consumption for many is pleasurable.
However, alcohol consumption – especially in excess – is linked to a number of negative outcomes: as a risk fa...ctor for diseases and health impacts, crime, road incidents, and, for some, alcohol dependence.
This topic page looks at the data on global patterns of alcohol consumption, patterns of drinking, beverage types, the prevalence of alcoholism, and consequences, including crime, mortality, and road incidents.
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Diabetes mellitus (hereafter referred to as diabetes) is a chronic, progressive disease characterized by elevated blood glucose levels. Diabetes can lead to complications such as cardiovascular disease (CVD) and premature death, and can damage eyes, kidneys and nerves. Globally, more than 400 millio...n adults live with diabetes – a disease that caused 1.6 million deaths in 2015 (1, 2). People with diabetes who have higher blood glucose levels are more likely to develop complications than those with lower blood glucose levels. Blood glucose management has an important role in preventing the
development and progression of complications in both type 1 and type 2 diabetes.
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Unlike in developed countries, the clinical effectiveness of diabetes self-management education (DSME) is not well-studied in the African context. Thus, this study sought to determine effects of DSME on clinical outcomes among type 2 diabetic (T2DM) patients in Ethiopia.
The Noncommunicable Diseases Country Profiles 2018 by the World Health Organization (WHO) provides an in-depth look at the burden of noncommunicable diseases (NCDs) such as cardiovascular diseases, cancer, chronic respiratory diseases, and diabetes across WHO Member States. It includes data on NCD m...ortality, risk factors like tobacco use, unhealthy diets, physical inactivity, and excessive alcohol consumption, as well as country-specific responses and health system capacities to manage and prevent NCDs.
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South Africa’s mineral resources have produced, and continue to produce, enormous economic wealth; yet decades of colonialism, apartheid, capital flight, and challenges in the neoliberal post-apartheid era have resulted in high rates of occupational lung disease and low rates of compensation for e...x-miners and their families. Given growing advocacy and activism of current and former mine workers, initiatives were launched by the South African government in 2012 to begin to address the legacy of injustice. This study aimed to assess developments over the last 5 years in providing compensation, quantify shortfalls and explore underlying challenges.
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This paper summarises the past, present and future of asbestos exposure. The future scenarios as to the mesothelioma incidence in countries, where asbestos has been banned, are discussed.
There is paucity of data on the burden and specific drivers operative in the pathogenesis of chronic obstructive pulmonary disease (COPD) in the African setting and populations. Lack of awareness and inadequate knowledge on the aetio-pathogenesis of the disease together with inadequate capacity for ...COPD care contributes to preventive and management challenges. Thus, the majority of patients with COPD are misdiagnosed, misclassified and mismanaged or undertreated. With the struggling improvement in the quality of healthcare in Africa, studies conducted over the last 10 years indicates the rising trends in both the risk factors and the burden of COPD. The role of new risk factors such as indoor pollution, infections with human immunodeficiency virus (HIV) and pulmonary tuberculosis (TB), in the pathogenesis of COPD in Africa is increasingly being recognized. This literature review attempts to collect and synthesize information that could be useful in improving COPD care and informing the governments to take appropriate actions for prevention, diagnosis and management of COPD in Africa.
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The article discusses the success of the Global Alliance against Chronic Respiratory Diseases (GARD) in Brazil. It details the initiatives launched to address chronic respiratory diseases (CRDs) like asthma and COPD, emphasizing the development of national programs and collaborative efforts with the... World Health Organization (WHO). Key achievements include successful advocacy, education campaigns, and pilot projects for asthma control, which have led to improved access to treatment and better management of CRDs. Despite challenges such as limited government priority, GARD Brazil has made significant progress in awareness and care for respiratory conditions. The article highlights the need for continued support to sustain these efforts and develop a formal national action plan.
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The document is a handbook on implementing the mBreatheFreely program, an mHealth initiative by the World Health Organization (WHO) and the International Telecommunication Union (ITU) aimed at improving the management of asthma and COPD through mobile technology. It provides a framework for governme...nts and policymakers to develop, launch, and evaluate national mHealth programs. The guide covers areas such as operations management, content development, promotion strategies, technology infrastructure, and monitoring and evaluation. It emphasizes the importance of mHealth in enhancing self-management, prevention, and treatment of chronic respiratory diseases, particularly in low- and middle-income countries. The handbook also includes examples of successful programs and practical tools for adaptation and implementation.
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The NICE guideline on antimicrobial prescribing for acute exacerbations of COPD provides recommendations for optimizing antibiotic use to treat exacerbations effectively while minimizing the risk of antimicrobial resistance. It includes criteria for assessing the need for antibiotics, guidance on se...lecting antibiotics, and considerations for reassessment and follow-up care.
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This guideline covers diagnosing and managing chronic obstructive pulmonary disease or COPD (which includes emphysema and chronic bronchitis) in people aged 16 and older. It aims to help people with COPD to receive a diagnosis earlier so that they can benefit from treatments to reduce symptoms, impr...ove quality of life and keep them healthy for longer.
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Myth: It’s better to ‘tough it out’ without taking asthma medication. The lungs do not get stronger or become better able to deal with asthma if a person tries to work through an attack without medication. In fact, the lung inflammation that goes along with an attack (see what is asthma) ...can cause permanent damage to the lungs. Always use medication according to the Asthma Action Plan. If you have questions, talk with your health care provider.
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When someone is having an asthma attack, their airways go into spasm which causes tightness of the chest; the linings of the airways become inflamed and phlegm is produced further obstructing the airways and leading to severe difficulty in breathing (Fig. 1). Asthma does lead to fatalities and shoul...d always be taken seriously.
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Asthma is a heterogeneous condition characterised by chronic inflammation and variable expiratory airflow limitation, as well as airway reversibility. The diagnosis of asthma in young children is limited by the inability to perform objective lung function testing in this group of patients and the wi...de variety of conditions that can phenotypically present with asthma-like symptoms.
This article provides an evidence-based approach for clinicians to accurately diagnose asthma in young children and to assess the level of control to guide therapeutic decisions.
The South African Childhood Asthma Working Group (SACAWG) convened in January 2017 with task groups, each headed by a section leader, constituting the editorial committee on assessment of asthma epidemiology, diagnosis, control, treatments, novel treatments and self-management plans. The asthma diagnosis and control task groups reviewed the available scientific literature and assigned evidence according to the Grades of Recommendation Assessment, Development and Evaluation (GRADE) system, providing recommendations based on current evidence.
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