Review Article
COVID-19: An Overview of SARS-CoV-2 Variants—The Current Vaccines and Drug Development
Table 2
SARS-CoV-2 variants of concern (VOC) [
49].
| | SARS-CoV-2 variants nomenclature | First identification | Current status | Date of designation | | WHO label | Pango lineages | GISAID clade | Nextstrain clade |
| | Alpha | B.1.1.7 | GRY (formerly GR/501Y.V1) | 20I (V1) | United Kingdom | VBM | VOC: 18-Dec-2020 |
| | Beta | B.1.351
B.1.351.2
B.1.351.3 | GH/501Y.V2 | 20H (V2) | South Africa | VBM | VOC: 18-Dec-2020 |
| | Gamma | P.1
P.1.1
P.1.2 | GR/501Y.V3 | 20J (V3) | Brazil | VBM | VOC: 11-Jan-2021
Previous VOC: 09-Mar-2022 |
| | Delta | B.1.617.2
AY.1
AY.2
AY.3 | G/478K.V1 | 21A | India | VBM | VOI: 4-Apr-2021
VOC: 11-May-2021 |
| | Omicron parent lineage | B.1.1.529 | GR/484A | 21k | Multiple countries | VOC | VOC: 26-Nov-2021
Previous VOC: 14-Mar-2023 |
|
|
VOI: variants of interest; VOC: variants of concern; VBM: variant being monitored.
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