The main known variants of SARS-CoV-2.
Variant of virus SARS-CoV-2 | The earliest documented case |
---|---|
Alfa | Great Britain, September 2020 |
Beta | North African Republic, May 2020 |
Gamma | Brazil, November 2020 |
Delta | India, October 2020 |
Omicron | Several countries, November 2021 |