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Variants

updated regularly
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 ... more
Cet article fait partie d’une série de notes explicatives sur la mise au point et la distribution de vaccins.
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.
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 ... more
Updated 28 January 2020
Available in English, French, Chinese, Arabic, Russian 8 February 2021
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.
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 ... more
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? ... more
Weekly epidemiological update on COVID-19, 28 September 2022
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
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 ... more
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 ... more
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 ... more
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 ... more
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, ... more
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 ... more
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