TABLE 1.
Information on the six variants in the study
| WHO label | Pango lineage | Virus name | Accession ID | Earliest documented samples | Date of designation |
|---|---|---|---|---|---|
| Alpha | B.1.1.7 | BetaCoV/England/QEUH-F56F0F/2021 | EPI_ISL_852526 | United Kingdom, Sep-2020 | 18-Dec-2020 |
| Beta | B.1.351 | BetaCoV/South_Africa/KRISP-K007869/2020 | EPI_ISL_860630 | South Africa, May-2020 | 18-Dec-2020 |
| Gamma | P.1 | BetaCoV/Brazil/AM-994/2020 | EPI_ISL_833174 | Brazil, Nov-2020 | 11-Jan-2021 |
| Delta | B.1.617.2 | BetaCoV/India/ILSGS00922/2021 | EPI_ISL_1663498 | India, Oct-2020 | 11-May-2021b |
| Omicron | B.1.1.529 | BetaCoV/South Africa/CERI-KRISP-K032233 | EPI_ISL_6699757 | Multiple countries, Nov-2021 | 26-Nov-2021c |
| Fin-796Ha | B.1.1.318 | BetaCoV/Finland/FinD796H/2021 | EPI_ISL_1061414 | Finland, Feb-2021 | /d |
a
Unlike other variants, the “Fin-796H” label is not recommended by WHO.
b
The Delta variant was designated as VOI on April 4, 2021, and as VOC on May 11, 2021.
c
The Omicron variant was designated as VUM on November 24, 2021, and as VOC on November 26, 2021.
d
The Fin-796H variant is not a VOC designated by WHO.