Table 1.
SARS-CoV-2 variants. The most spread SARS-CoV-2 variants, the country where they were first isolated, and the isolation dates were reported.
| Spike Variants | Isolation Country | Isolation Date |
|---|---|---|
| wild type | China | December 2019 |
| EPSILON | USA | March 2020 |
| ZETA | Brazil | April 2020 |
| BETA | South Africa | May 2020 |
| 20 A.EU2 | Portugal | June2020 |
| 20 A.EU1 | Spain | July 2020 |
| ALPHA | England | September 2020 |
| DELTA | India | October 2020 |
| KAPPA | India | October 2020 |
| A 23.1 | Uganda | October 2020 |
| GAMMA | Brazil | November 2020 |
| IOTA | USA | November 2020 |
| ETA | Multiple countries | November 2020 |
| LAMBDA | Peru | December 2020 |
| THETA | Philippines | January 2021 |
| B.1.1.318 | Multiple countries | January 2021 |
| MU | Columbia | January 2021 |
| OMICRON BA.1 | South Africa | November 2021 |
| OMICRON BA.2 | South Africa | December 2021 |
| OMICRON BA.2.12.1 | North America | December 2021 |
| OMICRON BA.4 | South Africa | January 2022 |
| OMICRON BA.5 | South Africa | January 2022 |