Silicosis is not a new disease; the impact of silica dust on respiratory function was observed by Hippocrates in 430 B.C. and in the 16th century by Agricol. In 1713, Rammazini described silicotic nodules in post-mortems of stone cutters presenting with respiratory symptoms. In the mid-late 1800s,... the introduction of mechanized tools in the mining sector rapidly increased levels of silica exposure, resulting in an increase in cases and our understanding of silicosis.
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Asbestos, the most frequent cause of occupational cancer, continues to be consumed ona massive scale, with millions of people exposed on a daily basis. This review explains why we havefailed in curtailing the silent epidemic of asbestos-related disease and why the numbers of asbestosvictims are like...ly to remain high. Emerging and developed countries have to be reminded that asbestosexposure has yet to become a problem of the past. The worldwide spread of asbestos, followed by thesurge of asbestos-related cancers, resembles the lung cancer epidemic caused by smoking andstimulated by manufacturers.
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South Africa has possibly the highest incidence of malignant mesothelioma anywhere, thanks to more than a century of mining asbestos in the Northern Cape, North- West, Limpopo and Mpumulanga provinces. There are three types of asbestos and all were mined in South Africa; the most carcinogenic is cro...cidolite, of which production peaked in 1977. The last asbestos mine closed only in 2002, and massive environmental contamination from unrehabilitated mines and mine dumps will ensure ongoing exposure well into the future.
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This American Thoracic Society Statement was prepared by a Committee of the Scientific Assembly on Environmental and Occupational Health at the request of the American Lung Association Occupational Health Expert Advisory Group to emphasize the continuing importance of silicosis as a major lung disea...se worldwide and the need for increasing efforts in prevention. Emphasis is placed on public health issues of silicosis rather than on important current research in pathologic mechanisms.
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The increasing prevalence of childhood asthma in the developed world is a cause for concern. A so-called Western lifestyle has been the factor most commonly cited to explain this worrying increase in asthma prevalence. Early studies in a limited number of African countries showed a very low rural pr...evalence of childhood asthma, especially where children lived according to a traditional lifestyle. These same studies showed that asthma was not uncommon in urbanized African children. There has been an
increasing tendency over the past 20 years for those in rural communities to move to the large urban centers. This article analyses the urban-rural differences and factors that influence the development of asthma in susceptible children.
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Asthma is a common breathing condition. Chances are that at least one in every fifth person will have it. People with asthma might have a cough, or wheeze and a feeling of tightness in their chests. A group of researchers from the United Kingdom teamed up with seven African countries to learn about ...the challenges that children living with asthma in Africa face. One part of their research focuses on air pollution specifically. This research indicates ways to deal with asthma triggers and help more people understand asthma and enjoy a normal active life.
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Asthma is the most common chronic condition in children worldwide. It affects daytime activities, sleep and school attendance and causes anxiety to parents, families and other carers. The quality of asthma diagnosis and management globally still needs substantial improvement. From infancy to the tee...nage years, there are age-specific challenges, including both underdiagnosis and overdiagnosis with stigma-related barriers to treatment in some cultures and in adolescents. The Paediatric Asthma Project Plan has been initiated to strengthen diagnosis and management of asthma. This encompasses a vision for the next 10–15 years, building on the knowledge and experience from previous educational projects. It will take into account the educational needs of patients, carers and healthcare professionals as well as the accessibility and affordability of medication, particularly in low and middle-income countries where the prevalence of asthma is rising more rapidly. This overview presents a first step for those involved in the diagnosis and management of childhood asthma to strengthen care for children globally.
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Coronavirus disease 2019 has a mild disease course in children and adolescents. Chronic respiratory conditions, including asthma, have been suggested as risk factors; however, asthma in children is highly variable in both triggers and severity.
During the pandemic, pediatric asthma services limite...d consultations and established virtual clinics. However, respondents perceived their patients’ asthma control to be retained or even improved, while treatment adherence was considered increased. Children with asthma were not disproportionately affected by coronavirus disease 2019.
Trigger avoidance and treatment adherence can rapidly improve asthma control in children, even under lockdown pressure. Children/adolescents with asthma do not appear to need additional prophylactic measures from coronavirus disease 2019 when asthma is well-treated. This article analyses the effect of COVID-19 on Asthma in children, providing information for management guidelines.
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Severe asthma is associated with high morbidity, mortality, and health care utilization, but its burden in Africa is unknown. This article wants to determine the burden (prevalence,
mortality, and activity and work impairment) of severe asthma in 3 countries in East Africa: Uganda, Kenya, and Ethio...pia using the American Thoracic Society/European Respiratory Society case definition of severe asthma.
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This journal provides information about the definition of Asthma, about its measurement in populations, the global burden of disease and the outcomes of childhood Asthma. It continues with the causes and treatment options of Asthma, followed by an outlook into the future.
Cystic fibrosis (CF) was earlier thought to be a disease prevalent in the West among Caucasians. However, quite a number of recent studies have uncovered CF cases outside of this region, and reported hundreds of unique and novel variant forms of CFTR. Here, we discuss the evidence of CF in parts of... the world earlier considered to be rare; Africa, and Asia. This review also highlighted the CFTR mutation variations and new mutations discovered in these regions. This discovery implies that the CF data from these regions were earlier underestimated. The inadequate awareness of the disease in these regions might have contributed towards the poor diagnostic facilities, under-diagnosis or/and under-reporting, and the lack of CF associated health policies. Overall, these regions have a high rate of infant, childhood and early adulthood mortality due to CF. Therefore, there is a need for a thorough investigation of CF prevalence and to identify unique and novel variant mutations within these regions in order to formulate intervention plans, create awareness, develop mutation specific screening kits and therapies to keep CF mortality at bay.
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Time has seen management for Cystic Fibrosis (CF) advance drastically, most recently in the development of the disease-modifying triple combination therapy ivacaftor/tezacaftor/elexacaftor. There is currently limited evidence regarding both the global epidemiology of CF and access to this transforma...tive therapy - and therefore where needs are not being met. Therefore, this study aims to define gaps in access to CF treatment. The results show that a significant CF patient burden exists in countries where disease-modifying drugs are unavailable, and final figures are likely underestimates. This analysis shows the potential to improve rates of diagnosis and treatment for CF, so a higher percentage of patients receive the most effective triple combination treatment.
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The target audience of this document (and the associated online companion tool) includes WHO country offices
in Member States of the African Region; Member States’ ministries of health and their public health emergency
operation centres; relevant external assessment teams; and partners looking... to identify preparedness gaps and
support interventions that help address them. In the event of a suspected or confirmed VHF case, the document also serves to provide any intervening partner with a sense of what structures should be in place, in order to guide
scale-up activities in line with regional and national plans.
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Pneumonia and diarrhoea account for 23% of under-five mortality and were responsible for an estimated 1.17 million deaths in children under five globally. Furthermore, pneumonia and diarrhoea were responsible for 18% of mortality in children 5–9 years of age, resulting in an estimated 86 000 preve...ntable deaths globally in 2021. Existing World Health Organization (WHO) guidance on the clinical management of pneumonia and diarrhoea has mainly focused on children less than 5 years of age.
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The World Health Organization provides regional and national strategies and operational plans that aim to support countries in work to achieve measles control and elimination. These are guided by high level frameworks including the Immunization Agenda 2030 and the Measles and Rubella Strategic Frame...work 2021–2030. These frameworks promote improvements in routine immunization programmes to reach all children, reduce immunity gaps and prevent outbreaks within the context of universal health care.
This interim guidance on Targeted and selective strategies in measles and rubella vaccination campaigns adds to the suite of guidance documents. It provides expanded description of methods to determine age groups for inclusion in preventive and outbreak response measles and rubella vaccination campaigns; and operational considerations that are specific to targeted and selective strategies in measles and rubella vaccination campaigns. This guidance also updates definitions for tailored, targeted and selective campaigns.The World Health Organization provides regional and national strategies and operational plans that aim to support countries in work to achieve measles control and elimination. These are guided by high level frameworks including the Immunization Agenda 2030 and the Measles and Rubella Strategic Framework 2021–2030. These frameworks promote improvements in routine immunization programmes to reach all children, reduce immunity gaps and prevent outbreaks within the context of universal health care.
This interim guidance on Targeted and selective strategies in measles and rubella vaccination campaigns adds to the suite of guidance documents. It provides expanded description of methods to determine age groups for inclusion in preventive and outbreak response measles and rubella vaccination campaigns; and operational considerations that are specific to targeted and selective strategies in measles and rubella vaccination campaigns. This guidance also updates definitions for tailored, targeted and selective campaigns.
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A formulary of dermatological preparations and background information on therapeutic choices, production and dispensing. 2nd edition
Psoriasis, which can involve the skin, nails and joints, is a chronic, painful, disfiguring and disabling noncommunicable disease (NCD) for which there is no cure. It negatively impacts on quality of life. Some of those who suffer from the disease develop chronic, inflammatory arthritis (psoriatic a...rthritis) that leads to joint deformations and disability. People with psoriasis are also reported to be at increased risk of developing other serious clinical conditions such as cardiovascular and other NCDs
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Biosafety involves the implementation of containment principles, technologies and practices to prevent unintentional exposure to biological agents. Biosecurity involves the protection, control and accountability of biological materials and information related to these materials and dualuse research,... to prevent their unauthorized access, loss, theft, misuse, diversion or intentional release.
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