The WHO continuously reviews available data on SARS-CoV-2 variants of concern. For this version, the global epidemiological
situation of the COVID-19 pandemic as of 21 January 2022 – at a time when the Omicron VOC had been identified in 171
countries across all six WHO Regions and was rapidly re...placing Delta worldwide – was considered Omicron has a substantial growth advantage, higher secondary attack rates and a higher observed reproduction number than Delta.
There is now significant evidence that immune evasion contributes to the rapid spread of Omicron. Other factors may be a shorter
serial interval (by about 0.8 to 1.2 days compared to Delta) and potential increased intrinsic transmission fitness . There is
growing evidence that with Omicron, there is lower vaccine effectiveness (VE) against infection and symptomatic disease soon after vaccination compared to Delta. There is also evidence of accelerated waning of VE over time of the primary series against infection and symptomatic disease for the studied vaccines. Further studies are required to better understand the drivers of transmission and declining incidence in various settings. These factors include the intrinsic transmission fitness properties of the virus, degree of immune evasion, vaccination coverage and level of vaccine-derived and post-infection immunity, levels of social mixing and degree of application of public health and social measures (PHSM).
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Background
Noncommunicable diseases are major contributors to morbidity and mortality worldwide. Modifying the risk factors for these conditions, such as physical inactivity, is thus essential. Addressing the context or circumstances in which physical activity occurs may promote physical activity a...t a population level. We assessed the effects of infrastructure, policy or regulatory interventions for increasing physical activity.
Methods
We searched PubMed, Embase and clinicaltrials.gov to identify randomised controlled trials (RCTs), controlled before-after (CBAs) studies, and interrupted time series (ITS) studies assessing population-level infrastructure or policy and regulatory interventions to increase physical activity. We were interested in the effects of these interventions on physical activity, body weight and related measures, blood pressure, and CVD and type 2 diabetes morbidity and mortality, and on other secondary outcomes. Screening and data extraction was done in duplicate, with risk of bias was using an adapted Cochrane risk of bias tool. Due to high levels of heterogeneity, we synthesised the evidence based on effect direction.
Results
We included 33 studies, mostly conducted in high-income countries. Of these, 13 assessed infrastructure changes to green or other spaces to promote physical activity and 18 infrastructure changes to promote active transport. The effects of identified interventions on physical activity, body weight and blood pressure varied across studies (very low certainty evidence); thus, we remain very uncertain about the effects of these interventions. Two studies assessed the effects of policy and regulatory interventions; one provided free access to physical activity facilities and showed that it may have beneficial effects on physical activity (low certainty evidence). The other provided free bus travel for youth, with intervention effects varying across studies (very low certainty evidence).
Conclusions
Evidence from 33 studies assessing infrastructure, policy and regulatory interventions for increasing physical activity showed varying results. The certainty of the evidence was mostly very low, due to study designs included and inconsistent findings between studies. Despite this drawback, the evidence indicates that providing access to physical activity facilities may be beneficial; however this finding is based on only one study. Implementation of these interventions requires full consideration of contextual factors, especially in low resource settings.
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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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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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Parasite Epidemiology and Control Volume 27, November 2024, e00380
The planning and implementation of intervention measures against schistosomiasis, particularly mass administration, require knowledge of the current status of the infection. This is important for monitoring the impact of the interve...ntion on disease indicators such as a decline in infection prevalence, intensity of infection, and urogenital morbidities. Following repeated rounds of mass treatment in northwestern Tanzania, the epidemiology of urogenital schistosomiasis has changed; thus, for the effective planning and allocation of resources, it is important to understand the current status of the disease in the targeted groups
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On August 13, 2024, the Africa CDC declared the mpox outbreak a Public Health Emergency of Continental Security (PHECS). The following day, the WHO declared it a Public Health Emergency of International Concern (PHEIC). A coordinated, continent-wide response is essential, co-led by the African Union... (AU) through the Africa CDC and the World Health Organization (WHO), in close collaboration with global partners working under a unified plan, budget, and monitoring framework.
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Capacity Project Gender Research Brief | In Lesotho, as in many other countries, the HIV and AIDS care burden falls on the shoulders of women and girls in unpaid, invisible household and community work. This gender inequity in HRH needs to be addressed to ensure fair and sustainable responses to the... need for home and community-based HIV/AIDS care and support. The Capacity Project addressed these issues through a study of men as providers of HIV/AIDS care and support.
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The mandate of the National Tuberculosis Control Programme is to provide leadership and stewardship to accelerate intense and coordinated efforts to reduce the adult TB burden of 290 per 100,000 population recently established in the 2013 National TB Prevalence Survey. Other key challenges are low T...B case notification, unacceptably high TB death rates, low antiretroviral therapy (ART) coverage among TB/HIV patients and low drug-resistant notification and treatment.
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Further analysis of the 2011 Nepal Demographic and Health Survey
Lettre Encyclique Laudato Si' du Saint-Père Francois sur la sauvegarde de la maison commune
BMJ Glob Health 2017;2:e000345. doi:10.1136/bmjgh-2017-000345. WHO's 2020 milestones for Chagas disease include having all endemic Latin American countries certified with no intradomiciliary Trypanosoma cruzi transmission, and infected patients under care. Evaluating the variation in historical expo...sure to infection is crucial for assessing progress and for understanding the priorities to achieve these milestones.
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This report presents a framework to link science, policy and practice for a comprehensive assessment of climate mitigation and adaptation investments and their impact on human health.The framework proposes to use weather and climate data to forecast health impacts over time, as well as biophysical a...nd economic models to quantify the outcomes of investments in climate change adaptation and mitigation for relevant sectoral indicators and health co-benefits. It provides guidance on the economic valuation of health co-benefits of climate action, for inclusion in sector-specific cost–benefit analysis (CBA), including the spatial allocation of such costs and benefits.
The framework developed and presented in this study is comprehensive, and provides various entry points for different audiences, including decision-makers in the public and private sectors, researchers and scientists, working in the health sector as well as in other thematic areas and related sectors affected by climate action.
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Esta publicación se dirige a quienes participan en los procesos de evaluación externa de las iniciativas de prevención y control de la enfermedad de Chagas que se llevan a cabo en la Región de las Américas. Mediante tales procesos se ponderan y reconocen los avances hacia la eliminación de la ...infección como problema de salud pública
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The aim of these Guidelines is to provide a framework for the conservation and sustainable use of plants in medicine. To do this, the Guidelines describe the various tasks that should be carried out to ensure that where medicinal plants are taken from the wild, they are taken on a basis that is sust...ainable.
The Guidelines conform to the principles of Caring for the Earth, prepared in partnership by IUCN, UNEP and WWF. Caring for the Earth extends the message and scope of the World Conservation Strategy to an ethic of sustainable living, and explains how to integrate conservation with development. Its message is particularly relevant to the issue of medicinal plants, which in many parts of the world are being seriously depleted due to over-exploitation and loss of habitats, resulting in a lack of essential medicines and so reducing options for the future.
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The World Health Organization (WHO) is releasing the second edition of its Global Accelerated Action for the Health of Adolescents (AA-HA!) guidance. The document aims to equip governments to respond to the health and well-being challenges, opportunities and needs of adolescents.
The guidance pro...vides the latest available data on adolescent health and well-being. It also outlines an updated list of core indicators that data should be collected on. Globally, road injury was the top cause of death for adolescent males in 2019. Among female adolescents, the leading causes of death were diarrhoeal diseases among the younger group (10-14 years) and tuberculosis (TB) in the older group (15-19 years).
Over the last 20 years, mortality rates have declined among adolescents globally, with the largest decline in older (15–19 years) adolescent girls. For non-fatal diseases, the burden has not improved over the past two decades, with the main causes of ill health in this category being: mental health conditions (depressive and anxiety disorders, childhood behavioural disorders), iron deficiency anaemia, skin diseases and migraine.
Adolescent well-being depends on a range of factors, including healthy food, education, life skills and employability, connectedness, feeling valued by society, safe and supportive environments, resilience, and the freedom to make choices. To take an appropriately holistic approach, the guidance outlines how to take crosscutting action to support adolescent health and well-being, with mutually reinforcing interventions across sectors, such as health, education, social protection, and telecommunications. Targeted efforts are also required to engage adolescents, as they trust health systems less than adults do and are especially vulnerable to modern-day trends, like online bullying and gaming.
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Across Zimbabwe, 7 million people in urban and rural areas are in urgent need of humanitarian assistance, compared to 5.5 million in August 2019. Since the launch of the Revised Humanitarian Appeal in August 2019, circumstances for millions of Zimbabweans have worsened. Drought and crop failure, exa...cerbated by macro-economic challenges and austerity measures, have directly affected vulnerable households in both rural and urban communities. Inflation continues to erode purchasing power and affordability of food and other essential goods is a daily challenge. The delivery of health care, clean water and sanitation, and education has been constrained and millions of people are facing challenges to access vital services.
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The current SEARVAP (South-East Asia regional vaccine action plan) describes a set of regional goals and objectives for immunization and control of vaccine-preventable diseases for 2016 – 2020 and highlights priority actions, targets and indicators that address the specific needs and challenges of... countries in the Region.
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