Document d’information scientifique
24 avril 2020
Le développement d’une immunité face à un agent pathogène à la suite d’une infection naturelle comporte plusieurs étapes et prend généralement une à deux semaines. Une infection virale entraîne immédiatement une réponse immunit...aire innée, non spécifique, au cours de laquelle les macrophages, les neutrophiles et les cellules dendritiques ralentissent la progression du virus et peuvent même éviter l’apparition de symptômes. Cette réponse non spécifique est suivie d’une réponse adaptative, au cours de laquelle l’organisme produit des anticorps qui se lient spécifiquement au virus. Ces anticorps sont des protéines appelées immunoglobulines. L’organisme produit également des lymphocytes T qui reconnaissent et éliminent les cellules infectées par le virus. Cette réponse adaptative permet parfois d’éliminer le virus de l’organisme et, si elle est suffisamment forte, d’éviter l’aggravation de la maladie ou la réinfection par le même virus. Ce processus est souvent mesuré par la présence d’anticorps dans le sang.
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Обновленная версия. В этой версии приведены обновленные рекомендации относительно стратегии диагностического тестирования в контексте обновлённой классификаци...и способов передачи, мер общественного здравоохранения и социальных мер, эпиднадзора за общественным здравоохранением и установленных ВОЗ определений случая COVID-19. В данном руководстве учтено использование новых инструментов, таких, как диагностические экспресс-тесты для выявления антигенов (ДЭТ-АГ) и аспекты тестирования привитых лиц, а также тестирования на генетические мутации, связанные с вариантами. Кроме того, для этой версии разработаны приложения, включая подборку полезных ресурсов и десять компонентов расширения тестирования на субнациональном уровне.
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Annex. This document is an update of a guidance published on 12 July 2021, after the review of new scientific evidence on transmission of SARS-CoV-2 variants of concern (VOC). It contains updated recommendations on the use of masks and respirators for health workers providing care to suspected or c...onfirmed COVID-19.
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This practical guideline establishes definitions for “contact”, “contact person”, “contact tracing” and other associated concepts. It allows for improvement of contact tracing strategies and provides recommendations attempting to answer some, though not all, questions that arose during t...he 2019 coronavirus pandemic and other outbreaks. The use of this guideline begins once people have been diagnosed and the potential for transmission exists. It is not, however, intended to assist with case investigation. The guideline empowers health workers, governments, and public health officials with the tools to implement effective contact tracing strategies.
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An interagency guidance note on working with communities in high density settings to plan local approaches to preventing and managing COVID-19. This guidance note is intended for anyone involved in COVID-19 risk communication and community engagement (RCCE) efforts in complex and fragile settings in... Africa.
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This document aims to describe a minimum set of surveillance activities recommended at the national level to detect and monitor the relative prevalence of SARS-CoV-2 variants and outline a set of activities for the characterization and assessment of risk posed by these variants. A set of indicators ...is also provided to standardize monitoring and public reporting of variant circulation.
The document is primarily intended for national and sub-national public health authorities and partners who support implementation of surveillance for SARS-CoV-2 variants
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7 June 2020 Version 1
Women in Myanmar have traditionally been underrepresented in public decision-making processes, a trend which is continuing in structures established to respond to COVID-19. This means that even as women are disproportionately affected by the crisis, they have less say in how t...heir communities and country respond to it, increasing the risk of a COVID-19 response that does not adequately address the needs and priorities of the most vulnerable women and girls.
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This bi-weekly brief details the latest developments in scientific knowledge and public health policy from around the world as well as updates to the COVID-19-related guidance from Africa CDC, WHO and other public health agencies.
Preliminary overview of refugees and migrants self-reported impact of COVID-19
The study surveyed over 30,000 refugees and migrants living in 170 countries. Many of the respondents had fled war or dire economic conditions in their home country only to be faced with the additional challenges posed b...y COVID-19. Travel restrictions including border closures, suspension of resettlement travel, and last-minute deportation left many stranded or forced to stay in cramped, makeshift shelters or detention centers. Amid these uncertain, precarious conditions, many migrants described either a lack of access to health services or a fear of seeking them out — even if they were experiencing COVID-19 symptoms.
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Data for Action March 2022, Issue 5
WHO has a unique combination of technical public health and scientific expertise, and a global operational footprint, with field offices in more than 150 countries. In 2020, this global, technical, and operational reach meant WHO was able to support countries around the world in every aspect of COVI...D-19 public health response, from surveillance and laboratory testing to maintaining essential health services in the most vulnerable and fragile contexts.
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В этом документе изложена стратегия
Европейского региона ВОЗ в области
реагирования на COVID-19 и ликвидации
его последствий на основе актуальной
глобальной страт...гии ВОЗ в сфере борьбы
с COVID-19 на период с февраля по декабрь 2020 г.
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8 February 2021
This document highlights 10 well established Risk Communication and Community Engagement (RCCE) principles that have proven their power. Together they put communities at the heart of the roll out of new vaccines, treatments and tests and promote trust, the critical ingredient for al...l community action. Informed, engaged and empowered communities are the bedrock for the arrival of new vaccines, treatments and tests that will be introduced to reduce the spread of COVID-19 and save lives. With communities fully engaged and actively participating through the full cycle of planning, delivery and assessment for biomedical tools, demand for these tools can be increased, leading to widespread and effective uptake and use
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New funding requirements: CHF 2.8 billion IFRC-wide of which CHF 670 million is channelled through the IFRC Emergency Appeal in support of National Societies
It is impossible to address the many complex needs of respiratory virus surveillance with a single surveillance system. Multiple systems, investigations and studies must each be fit-for-purpose to specific priority surveillance objectives, and only together can they provide essential information to ...policy-makers. In essence, each surveillance approach fit together as “tiles in a mosaic” that provides a complete picture of respiratory viruses and the impact of associated illnesses and interventions at the country level. This mosaic framework demonstrates how surveillance approaches may be implemented as coordinated and collaborative systems, well-matched to specific priority objectives.
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