The pandemic has not settled into a seasonal pattern - new variants have driven a rapid succession of recent waves

Weekly estimates for Covid-19 positivity rates

England

Wales

Northern Ireland

Scotland

Omicron 1

Alpha variant

2nd wave

2

Delta

3

10%

8

6

4

2

0

2021

2022

England

Wales

Northern Ireland

Scotland

10%

2nd wave

Alpha variant

Delta

Omicron

Omicron 2

Omicron 3

8

6

4

2

0

2021

2022