Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Currently designated variants of concern (VOCs)+ by WHO.
| WHO Label | Pango Lineage | Earliest Documented Samples | Date of Designation |
|---|---|---|---|
| Alpha | B.1.1.7 | United Kingdom, September 2020 | 18 December 2020 |
| Beta | B.1.351 | South Africa, May 2020 | 18 December 2020 |
| Gamma | P.1 | Brazil, November 2020 | 11 January 2021 |
| Delta | B.1.617.2 | India, October 2020 | VOC: 11 May 2021 |
| Omicron | B.1.1.529 | Multiple countries, November 2021 | VOC: 26 November 2021 |
Adapted from: World Health Organization [16].
