Covid variants in South Africa and the rise of Omicron

Alpha

Beta

Delta

Omicron

Other

100%

80

60

40

20

0

1 Oct

2020

14 Jan

2021

29 Apr

12 Aug

18 Nov

Alpha

Beta

Delta

Omicron

Other

100%

80

60

40

20

0

1 Oct 2020

14 Jan 2021

29 Apr

12 Aug

18 Nov

Guardian graphic. Source: Gisaid, Reuters. Note: data to week ending 24 November 2021, published by week