22 April 2022, This document provides updated interim recommendations on the use of masks by health workers providing care to patients with suspected or confirmed COVID-19. This update is prompted by new evidence around mask use and COVID-19 transmission, as well as the emergence of variants of conc...ern including Omicron. Masks continue to be a critical tool to prevent the spread of COVID-19. These interim guidelines supersede the recommendations provided in the WHO recommendations on mask use by health workers, in light of the Omicron variant of concern published on 22 December 2022.
WHO continually evaluates the emerging evidence and will review these interim recommendations within two months and issue new guidance as needed.
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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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Vor welchen Herausforderungen die Weltgesundheitsorganisation steht und wie Deutschland zu ihrer Stärkung beitragen kann.
Das Management von Krisen hat in den letzten Jahren erheblich an Bedeutung gewonnen, insbesondere auch im Öffentlichen Gesundheitsdienst (ÖGD). Grundsätzlich liegt die Entscheidungshoheit im Rahmen des Krisenmanagements infektiologischer Gefahrenlagen bei den kommunalen Gesundheitsämtern. Aufgru...nd der aktuellen Lage (Stand 18. März 2020) in Zusammenhang mit der Verbreitung des neuen Coronavirus stellen wir hiermit in einer Vorabversion Auszüge unseres Lehrbuchs zur Verfügung.
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Guide technique pour la prise en charge des maladies cardiovasculaires dans le cadre des soins de santé primaires
Building on previous guidelines, the People In Aid Code seeks to offer agencies an effective framework for human resources management, helping them assess and raise their performance.
Aid Delivery Methods vol.1
Health Evidence Network synthesis report 53
Mid-term review of The National AIDS Programme 2011-15
October 2013
UNAIDS 2014 | Guidance Note
This technical package represents a select group of strategies based on the best available evidence to help communities and states sharpen their focus on prevention activities with the greatest potential to prevent suicide