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Orientations provisoires
9 août 2021
Le présent document vise à décrire un ensemble minimal d'activités de surveillance recommandées au niveau national pour détecter et surveiller la prévalence relative des variantes du SRAS-CoV-2 et à présenter un ensemble d'activités pour la caractér
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n light of the potential risk posed by SARS-CoV-2 variants, in January 2021 WHO organized an ad hoc consultation to discuss the development of an R&D agenda in response to existing and emerging SARS-CoV-2
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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
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This document aims to provide interim guidance for microbiology and virology experts, other laboratory professionals, laboratory managers, infectious disease programme managers, public health professionals and other stakeholders that provide primary, confirmatory or advanced testing for SARS-CoV-2,
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Weekly epidemiological update on COVID-19, 28 September 2022
While COVID-19 virus continues to circulate and evolve, new variants are constantly emerging. Most of the current COVID-19 cases are driven by the circulation of the BA.5 subvariant of Omicron. The COVID-19 vaccines are being updated with Omicron
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1 March 2021
This article is part of a series of explainers on vaccine development and distribution. Learn more about vaccines – from how they work and how they’re made to ensuring safety and equitable access – in WHO’s Vaccines Explained series.
Cet article fait partie d’une série de notes explicatives sur la mise au point et la distribution de vaccins.
What are the variants circulating at this time? How are variants classified as variants of interest or concern? What does this mean for the public?
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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
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As new variants emerge people are wondering if they should wait until a more efficacious vaccine is available or if they should go ahead and get vaccinated now? Answering your questions on COVID-19 vaccines and
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21 January 2022
The overall threat posed by Omicron largely depends on four key questions: (i) how transmissible the variant is; (ii) how well vaccines and prior infection protect against infection, transmission, clinical disease and death; (iii) how virulent the variant is compared to other
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How much protection does the current batch of COVID-19 vaccines provide us? Would you need a booster shot for new variants? What does science and evidence tell us about mass gatherings and the spread of COVID-19?
WHO’s Chief Scientist Dr Soumya
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21 Dec 2021. Slideset updated regularly to include the latest data and guidance on COVID-19 vaccines, including implications of emerging SARS-CoV-2 variants
26 March 2021
If you have already had COVID-19 do you still need both doses of the vaccine? Do these vaccines protect you against infection? Do they protect us against variants? WHO’s Dr Katherine O’Brien answers these questions in Science in 5
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On the 9 February 2021, Africa CDC convened a special session of the Africa Task Force for COVID-19 to review existing data and evidence and recommend
The NY Times variant tracker is perhaps the most accessible and relevant publication for non-molecular biologists and the general public
Each coronavirus contains nearly 30,000 letters of RNA. This genetic information allows the virus to infect cells and hijack them to make new viruses.
How concerned should we be about the new variants of SARS CoV 2 which cause COVID-19? Is it unusual for viruses to change and mutate? Do vaccines protect against these variants and what can you do t
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On the 9 February 2021, Africa CDC convened a special session of the Africa Task Force for COVID-19 to review existing data and evidence and recommend
