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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Facing the COVID-19 (new coronavirus disease) pandemic, the countries of the world must take decisive action to stop the spread of the virus. In these critical circumstances, it is es- sential that everyone is informed about other health risks and hazards so that they can stay safe and healthy.
The... following factsheet provides important information that you should know about alcohol consumption and COVID-19. It addresses, among other things, the misinformation that is being spread through social media and other communication channels about alcohol and COVID-19.
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19 March 2020
Technical documentation
The purpose of this document is to offer guidance to Member States on quarantine measures for individuals in the context of COVID-19. It is intended for those responsible for establishing local or national policy for quarantine of individuals, and adherence ...to infection prevention and control measures.
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This document provides guidance on the implementation of the shielding approach in camps and camp-like settings for refugees and internally displaced persons. It is intended for the displaced community itself, humanitarian actors and camp coordination / management authorit...ies.
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This document provides guidance on the implementation of the shielding approach in urban areas in LICs and crisis-affected regions. It is intended for the community itself, national and local governance institutions, and humanitarian and development actors operating in the country.
In response to COVID-19, countries around the world have implemented several public health and social measures (PHSM), such as movement restrictions, closure of schools and businesses, and international travel restrictions.1 As the local epidemiology of the disease changes, countries will adjust (i....e. loosen or reinstate) these measures according to the intensity of transmission.
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Annex to Considerations in adjusting public health and social measures in the context of COVID-19
In response to COVID-19, countries around the globe have implemented several public health and social measures (PHSM), including large scale measures such as movement restrictions, closure of schools and businesses, geographical area quarantine, and international travel restrictions.
As of 15 May 2020, more than 4 million confirmed cases of COVID-19, including more than 285,000 deaths have been reported to WHO. The risk of severe disease and death has been highest in older people and in persons with underlying noncommunicable diseases (NCDs), such as hypertension, cardiac diseas...e, chronic lung disease and cancer.
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The latest update (28 January 2021) includes the following addition and revision:
biosafety aspects for working with antigen-detecting rapid diagnostic test;
handling new variants of SARS-CoV-2 in the laboratory;
updated assay decontamination before disposal;
personal protectiv...e equipment (PPE) for specimen collection;
addressing chemical hazards and their safe disposal; and
the fourth edition of the WHO Laboratory Biosafety Manual (LBM4) is now available and the terminology in this guidance was aligned with the LBM4.
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La vaccination est un service de santé essentiel qui protège les sujets sensibles contre les maladies à prévention vaccinale (MPV).2 La vaccination en temps voulu permet aux individus et aux communautés de rester protégés et diminue la probabilité d’une poussée épidémi...que de MPV.
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La pandémie actuelle de COVID-19 entraîne des difficultés exceptionnelles et sans précédent pour les autorités compétentesa responsables des systèmes nationaux decontrôle de la sécurité sanitaire des alimentsb, qui sont tenues de continuer à assurer des fonct...ions et des activités de routine en se conformant aux règlements nationaux et aux recommandations internationales. Dans de nombreux pays, le personnel employé par les autorités compétentes travaille généralement à domicile car le télétravail est devenu la norme et toutes les réunions en présentiel sont annulées ou sont réorganisées sous forme de téléconférence. Il est difficile de maintenir, sans interruption, les activités de routine telles que l’inspection des entreprises du secteur alimentaire, la certification des exportations, le contrôle des denrées alimentaires importées, le suivi et la surveillance de la sécurité de la chaîne d’approvisionnement alimentaire, l’échantillonnage et l’analyse des aliments, la gestion des incidents alimentaires, les conseils sur la sécurité sanitaire des aliments et la réglementation relative aux denrées alimentaires à l’intention de l’industrie et la communication au grand public sur les questions relatives à la sécurité sanitaire des aliments.
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This document offers guidance to Member States in the African region on the key steps used to conduct contact tracing related to the COVID-19 response. It is to be used by national and local health authorities in the implementation of tracing of contacts of probable and confirmed COVID-19 cases.
Comme les informations sur COVID-19 évoluent rapidement, il peut être difficile de naviguer et de synthétiser toutes les informations. L'objectif de ce document est de fournir une référence synthétisée et indexée d'informations COVID-19 précises et normalisées provenant de sources fiables.... Les informations sont présentées dans un langage simple et clair afin de soutenir l'élaboration des messages et du matériel nécessaires aux interventions de changement social et comportemental.
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Prescriptions and Actionables for a Healthy and Green Recovery.
The practical steps outlined in this report aim at creating a healthier, fairer and greener world while investing to maintain and resuscitate the economy hit by the effects of COVID-19.
Policy makers, national and local decision-make...rs and a wide array of other actors wishing to contribute to a healthy recovery can now take decisive steps by shaping the way we live, work and consume. Effects on environmental degradation and pollution and climate change will be wide ranging. WHO and partner organizations have since long been developing substantive guidance and provide support for building healthier environments for healthier populations.
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This guidance note is meant to assist humanitarian actors, youth-led organizations, and young people themselves across sectors, working at local, country, regional, and global levels in their response to the novel coronavirus pandemic. It begins diagnostically, exploring the impacts of coronavirus d...isease (COVID-19) on young people. It then proposes a series of actions that practitioners and young people can take to ensure that COVID-19 preparedness, response plans and actions, are youth-inclusive and youth-focused – with and for young people. Recommendations are structured around the five key actions of the Compact for Young People in Humanitarian Action: services, participation, capacity, resources, and data. Where available, the recommended actions are accompanied by resources and concrete examples, which can inform approaches and support implementation
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Scientific Brief, 30 June 2020
a systematic review and meta-analysis Derek K Chu et al. on behalf of the COVID-19 Systematic Urgent Review Group Effort (SURGE) study authors.
Published: The Lancet June 01, 2020 DOI: https://doi.org/10.1016S0140-6736(20)31142-9
'We did a systematic review of 172 observational studies in health-...care and non-health-care settings across 16 countries and six continents... Physical distancing of 1 m or more was associated with a much lower risk of infection, as was use of face masks (including N95 respirators or similar and surgical or similar masks [eg, 12–16-layer cotton or gauze masks]) and eye protection (eg, goggles or face shields)...'
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Guiding principles for reuse are:
Respirators which have been visibly contaminated (e.g. during procedure at intubated patients, such as suction cleaning of airways, taking probes, extubation attempts, etc.) or are damaged or not fitting, should be discarded and cannot be taken for re-use or de...contamination procedures.
Respirators may be protected by a medical face mask in order to prevent soiling.
Use of new ‘expired respirators’ (manufacturers expiry date) is possible if they were properly stored until use.
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COVID-19 disproportionately affects the poor and vulnerable. Community health workers are poised to play a pivotal role in fighting the pandemic, especially in countries with less resilient health systems. Drawing from practitioner expertise across four WHO regions, this article outlines the targete...d actions needed at different stages of the pandemic to achieve the following goals: (1) PROTECT healthcare workers, (2) INTERRUPT the virus, (3) MAINTAIN existing healthcare services while surging their capacity, and (4) SHIELD the most vulnerable from socioeconomic shocks. While decisive action must be taken now to blunt the impact of the pandemic in countries likely to be hit the hardest, many of the investments in the supply chain, compensation, dedicated supervision, continuous training and performance management necessary for rapid community response in a pandemic are the same as those required to achieve universal healthcare and prevent the next epidemic.
BMJ Global Health2020;5:e002550. doi:10.1136/bmjgh-2020-002550
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