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 diphther...ia, whereby the exotoxin produced characteristically 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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Asthma is the commonest chronic respiratory tract disease in children. In low-income countries, ...challenges exist in asthma diagnosis. In surveys done in children, the prevalence of ‘asthma’ defined by symptoms is high compared to ‘doctor diagnosed asthma’. The questions answered by this review are What challenges have been experienced in the diagnosis of asthma in children? What solutions will address these challenges?
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The "Global NCD action plan" provides a road map and a menu of policy options for countries to take in order to attain the 9 voluntary global targets, including that of a 25% relative reduction in premature mortality from cardiovascular diseases, ca...ncer, diabetes or chronic respiratory diseases by 2025. The main focus of this action plan is on 4 types of NCDs (cardiovascular diseases, cancer, chronic respiratory diseases, diabetes) which make the largest contribution to morbidity and mortality due to NCDs, and on 4 shared behavioural risk factors (tobacco use, unhealthy diet, physical inactivity, harmful use of alcohol).
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Noncommunicable diseases (NCDs) – chief among them, cardiovascular diseases (heart disease and stroke), cancer, diabetes and ...te-to-highlight medbox">chronic respiratory diseases – cause nearly three-quarters of deaths in the world. Their drivers are social, environmental, commercial and genetic, and their presence is global. Every year 17 million people under the age of 70 die of NCDs, and 86% of them live in low- and middle-income countries.
Users can explore the data below by country, accessing detailed information on noncommunicable diseases and their key risk factors
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The "Global NCD action plan" provides a road map and a menu of policy options for countries to take in order to attain the 9 voluntary global targets, including that of a 25% relative reduction in premature mortality from cardiovascular diseases, ca...ncer, diabetes or chronic respiratory diseases by 2025. The main focus of this action plan is on 4 types of NCDs (cardiovascular diseases, cancer, chronic respiratory diseases, diabetes) which make the largest contribution to morbidity and mortality due to NCDs, and on 4 shared behavioural risk factors (tobacco use, unhealthy diet, physical inactivity, harmful use of alcohol).
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Policy Brief | April 2015 | This brief accompanies the data sheet, Addressing Risk Factors for Noncommunicable Diseases Among Young People in Africa: Key to Prevention and Sustainable Development, and its data appendix, which provide all available c...ountry-specific data on four key NCD risk factors among young people in Africa since 2004. These publications extend an earlier publication, Noncommunicable Disease Risk Factors Among Young People in Africa: Data Availability and Sources. All are available at www.prb.org/Publications/Datasheets/2015/ncd-risk-youth-africa.aspx.
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Childhood Respiratory Diseases & the Environment learning objectives
•To understand how the respiratory ...ox">tract is affected by the environment
•To describe respiratory diseases linked to the environment
•To list one population-level intervention and one personal-level intervention for decreasing risk of respiratory diseases
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Chronic respiratory diseases, such as asthma and
chronic obstructive pulmonary ...ribute-to-highlight medbox">disease, kill more than
four million people every year and affect hundreds
of millions more. These diseases erode the health
and well-being of the patients and have a negative
impact on families and societies. Women and
children are particularly vulnerable, especially those
in low and middle income countries, where they are
exposed on a daily basis to indoor air pollution from
solid fuels for cooking and heating. In high income
countries, tobacco is the most important risk factor
for chronic respiratory diseases, and in some of
these countries, tobacco use among women and
young people is still increasing.
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The article outlines the prioritized research agenda for the prevention and control of chronic respiratory diseases (CRDs) as part of the World Hea...lth Organization's (WHO) action plan on noncommunicable diseases (NCDs) from 2008 to 2013. It highlights the significant global impact of CRDs, including asthma, chronic obstructive pulmonary disease (COPD), and other related conditions, particularly in low- and middle-income countries (LMICs). The document stresses the need for effective prevention strategies and better surveillance, as well as enhanced healthcare infrastructure and resources in LMICs. It calls for research into CRD risk factors, effective interventions, and integrated care approaches that align with broader NCD prevention programs. The article emphasizes the importance of public health initiatives and cross-sector collaborations to reduce the disease burden and improve patient outcomes.
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There is increasing interest in understanding the role of air pollution as one of the greatest threats to human health worldwide. Nine of 10 individuals breathe air with polluted compounds that have a great impact on lung tissue. The nature of the relationship is complex, and new or updated data are... constantly being reported in the literature. The goal of our review was to summarize the most important air pollutants and their impact on the main respiratory diseases (chronic obstructive pulmonary disease, asthma, lung cancer, idiopathic pulmonary fibrosis, respiratory infections, bronchiectasis, tuberculosis) to reduce both short- and the long-term exposure consequences. We considered the most important air pollutants, including sulfur dioxide, nitrogen dioxide, carbon monoxide, volatile organic compounds, ozone, particulate matter and biomass smoke, and observed their impact on pulmonary pathologies. We focused on respiratory pathologies, because air pollution potentiates the increase in respiratory diseases, and the evidence that air pollutants have a detrimental effect is growing. It is imperative to constantly improve policy initiatives on air quality in both high- and low-income countries.
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Aerosol pollutants are known to raise the risk of development of non-communicable respiratory diseases (NCRDs) such as asthma, chronic bronchitis, ...chronic obstructive pulmonary disease, and allergic rhinitis. Sub-Saharan Africa’s rapid pace of urbanization, economic expansion, and population growth raise concerns of increasing incidence of NCRDs. This research characterizes the state of research on pollution and NCRDs in the 46 countries of Sub-Saharan Africa (SSA). This research systematically reviewed the literature on studies of asthma; chronic bronchitis; allergic rhinitis; and air pollutants such as particulate matter, ozone, NOx, and sulfuric oxide.
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The Global Action Plan for the Prevention and Control of Noncommunicable Diseases 2013-2020 by the World Health Organization (WHO) outlines a comprehensive strategy to address the global rise in noncommunicable ...dbox">diseases (NCDs), including cardiovascular diseases, cancer, chronic respiratory diseases, and diabetes.
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The Global Status Report on Noncommunicable Diseases (NCDs) 2014 by the World Health Organization outlines the global impact of NCDs, including cardiovascular diseases, cancer, diabetes, and ...lass="attribute-to-highlight medbox">chronic respiratory diseases, which are responsible for a significant portion of global mortality, particularly in low- and middle-income countries.
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The document "Chronic Respiratory Diseases: A Handbook for Pharmacists" outlines the significant role pharmacists play in managing asthma and COPD,... emphasizing patient education, disease prevention, medication management, and promoting healthy lifestyles. It highlights the importance of pharmacists in supporting early detection, adherence to treatment, smoking cessation, and interprofessional collaboration to enhance respiratory care and outcomes.
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Long Acting Muscarinic Antagonists (LAMA) such as tiotropium and glycopyrronium are used in the management of COPD1. They have been shown to improve lung function, quality of life and exercise tolerance. They have also been associated with reduced COPD-related exacerbations, associated hospitalisati...ons and duration of hospital stay. Both the South African Thoracic Society (SATS) and Global Initiative for Chronic Obstructive Lung Disease (GOLD), guidelines recommend the use of long acting anticholinergic drugs (or long acting beta agonists) in moderate to very severe disease as defined by lung function (FEV1). The most up to date guideline, utilizing the GRADE methodology (European Respiratory Society guidelines of 2017), confirms their superiority over long acting β agonists (LABA) as monotherapy for COPD in that LAMA's have demonstrated greater efficacy in terms of exacerbation reduction, with similar safety profile.2 These recommnedations are supported by published peer-reviewed
evidence including individual papers and Cochrane reviews.
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The article "A 20-year follow-up study on chronic respiratory effects of exposure to cotton dust" evaluates the long-term impact of cotton dust exposure on ...">respiratory health. It followed a cohort of Chinese cotton and silk workers from 1981 to 2001, comparing lung function and symptoms. Results showed that cotton workers experienced greater declines in lung function and persistent respiratory symptoms compared to silk workers. The study found that exposure to airborne endotoxins in cotton dust was strongly linked to chronic respiratory impairment. It highlighted that stopping exposure helped improve lung function, particularly in non-smoking men, while smokers continued to show negative effects.
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The "Cystic Fibrosis Fact Sheet" by the National Heart, Lung, and Blood Institute provides an overview of cystic fibrosis (CF), a chronic and often fatal genetic disorder affecting the respiratory a...nd digestive systems. The document outlines the causes, genetic inheritance patterns, and symptoms of CF, which include thick mucus buildup, respiratory issues, and digestive problems. It also discusses diagnostic methods, such as the sweat test and genetic testing, and highlights current treatment approaches focused on symptom management, including chest therapy, medications, and potential gene therapy. The fact sheet emphasizes patient and family education to improve quality of life and support coping strategies.
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This manual provides a framework for morbidity management and disability prevention of patients affected by NIDs and gives specific guidance for the proper care of patients suffering from chronic conditions caused by lymphatic filariasis, leprosy, t...rachoma, and Chagas disease. It is intended to be used mainly by health care workers at the primary health care level, but health workers at more complex and specialized levels may also find it useful.
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This manual provides a framework for morbidity management and disability prevention of patients affected by NIDs and gives specific guidance for the proper care of patients suffering from chronic conditions caused by lymphatic filariasis, leprosy, t...rachoma, and Chagas disease. It is intended to be used mainly by health care workers at the primary health care level, but health workers at more complex and specialized levels may also find it useful.
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