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The term variant of concern (VOC) for SARS-CoV-2, which causes COVID-19, is a category used for variants of the virus where mutations in their spike protein receptor binding domain (RBD) substantially increase binding affinity (e.g., N501Y) in RBD-hACE2 complex (genetic data), while also being linked to rapid spread in human populations ...
Delta (B.617.2) First identified in India in late 2020, the delta variant soon spread across the globe. It became the dominant variant of SARS-CoV-2 until the emergence of omicron in December 2021.
The latest mutations of SARS-CoV-2 — specifically KP.1, ... deaths remained far below the weekly rates during previous surges, with 340 reported during the week ending Aug. 3, compared with ...
This article documents the chronology and epidemiology of SARS-CoV-2, the virus that causes the coronavirus disease 2019 and is responsible for the COVID-19 pandemic, in September 2022. The first human cases of COVID-19 were identified in Wuhan , China, in December 2019.
Variation between testing programmes worldwide results in different ascertainment rates per country: not every SARS-CoV-2 infection, nor every COVID-19-related death, will be identified, while on the other hand some deaths may be wrongly attributed to COVID-19 (for example if all suspected COVID-19 deaths are counted as COVID-19 deaths, as ...
On 26 November 2021, the WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution declared PANGO lineage B.1.1.529 a variant of concern and designated it with the Greek letter omicron. [10] The WHO skipped the preceding letters nu and xi in the Greek alphabet to avoid confusion with the similarities of the English word "new" and the Chinese ...
The Omicron variant features as such for the first time in the overview of WHO's weekly operational update, namely "Supporting Omicron variant detection and COVID-19 response in southern Africa." As of 2 December, Botswana and South Africa have reported 19 and 172 Omicron variant cases, respectively, accounting for 62% of global cases.
The Lambda variant, also known as lineage C.37, is a variant of SARS-CoV-2, the virus that causes COVID-19. [1] It was first detected in Peru in August 2020. [ 2 ] On 14 June 2021, the World Health Organization (WHO) named it Lambda variant [ 1 ] and designated it as a variant of interest . [ 3 ]