Table 2.
List of SARS-CoV-2 variants of concern (VOCs) and variants of interest (VOIs) (Cascella et al. 2022; WHO 2022b)
| Name of the variant | Lineage | First reported | Date of the first report |
|---|---|---|---|
| Variants of concern (VOCs) | |||
| Alpha | B.1.1.7 | UK, September 2020 | December 18, 2020 |
| Beta | B.1.351 | South Africa, May 2020 | December 18, 2020 |
| Gamma | P.1 | Brazil, November 2020 | January 11, 2021 |
| Delta | B.1.617.2 | India, October 2020 | VOI: April 4, 2021 VOC: May 11, 2021 |
| Omicron | B.1.1.529 | South Africa, November 2021 | November 26, 2021 |
| Variants of interest (VOIs) | |||
| Epsilon | B.1.427/B.1.429 | USA, March 2020 | March 5, 2021 |
| Zeta | P.2 | Brazil, April 2020 | March 17, 2021 |
| Eta | B.1.525 | Multiple countries, December 2020 | March 17, 2021 |
| Theta | P.3 | Philippines, January 2021 | March 24, 2021 |
| Iota | B.1.526 | USA, November 2020 | March 24, 2021 |
| Kappa | B.1.617.1 | India, October 2020 | April 4, 2021 |
| Lambda | C.37 | Peru, August 2020 | June 14, 2021 |
| Mu | B.1.621 | Colombia, January 2021 | August 30, 2021 |