# Weekly swab positivity updates - Jul-Dec 2021

**24 December 2021 - interim update**

Between 13 December 2021 and 19 December 2021:

- In England, the percentage of people testing positive for coronavirus (COVID-19) was 2.83%; we estimate that 1,544,600 people in England had COVID-19 (95% credible interval: 1,477,900 to 1,615,800), equating to around 1 in 35 people.
- In Wales, the percentage of people testing positive was 2.30%; we estimate that 70,000 people in Wales had COVID-19 (95% credible interval: 57,100 to 83,800), equating to around 1 in 45 people.
- In Northern Ireland, the percentage of people testing positive was 2.45%; we estimate that 44,900 people in Northern Ireland had COVID-19 (95% credible interval: 34,900 to 56,100), equating to around 1 in 40 people.
- In Scotland, the percentage of people testing positive was 1.50%; we estimate that 79,200 people in Scotland had COVID-19 (95% credible interval: 65,600 to 94,000), equating to around 1 in 65 people.
- In England, COVID-19 infections have increased in all age groups.
- In England, COVID-19 infections have increased in all regions except the South West in the latest week; the highest rates are in London where around 1 in 20 people had COVID-19 and lowest in the North East where around 1 in 55 people had COVID-19.
- COVID-19 infections compatible with the Omicron variant have increased in all regions in England with substantial regional variation; the highest rates are in London and the lowest in the North East.

**23 December 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) increased in the week ending 16 December 2021; we estimate that 1,202,300 people in England had COVID-19 (95% credible interval: 1,146,800 to 1,263,000), equating to around 1 in 45 people.
- In Wales, the trend in the percentage of people testing positive for COVID-19 was uncertain in the week ending 16 December 2021; we estimate that 54,400 people in Wales had COVID-19 (95% credible interval: 44,300 to 65,500), equating to around 1 in 55 people.
- In Northern Ireland, the trend in the percentage of people testing positive for COVID-19 was uncertain in the week ending 16 December 2021; we estimate that 37,800 people in Northern Ireland had COVID-19 (95% credible interval: 29,100 to 47,700) equating to around 1 in 50 people.
- In Scotland, the percentage of people testing positive for COVID-19 increased in the week ending 16 December 2021; we estimate that 76,200 people in Scotland had COVID-19, (95% credible interval: 63,100 to 90,500) equating to around 1 in 70 people.
- In England, the percentage of people testing positive for COVID-19 increased in the North West, Yorkshire and The Humber, East Midlands, East of England, London and the South East in the week ending 16 December 2021.
- In the week ending 16 December 2021, the percentage of people testing positive for COVID-19 in England increased in all age groups except those in school year 7 to school year 11 and those aged 70 years and older, where their trends were uncertain.
- In the week ending 16 December 2021, the percentage of cases compatible with the Omicron variant (B.1.1.529) has increased in all four UK countries.

**17 December 2021 - weekly update**

- In England, the trend in the percentage of people testing positive was uncertain in the week ending 11 December 2021; we estimate that 936,000 people in England had coronavirus (COVID-19) (95% credible interval: 883,900 to 989,100), equating to around 1 in 60 people.
- In Wales, the trend in the percentage of people testing positive was uncertain in the week ending 11 December 2021; we estimate that 56,200 people in Wales had COVID-19 (95% credible interval: 44,900 to 68,800), equating to around 1 in 55 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 decreased in the week ending 11 December 2021; we estimate that 37,100 people in Northern Ireland had COVID-19 (95% credible interval: 28,700 to 46,800), equating to around 1 in 50 people.
- In Scotland, the trend in the percentage of people testing positive was uncertain in the week ending 11 December 2021; we estimate that 67,100 people in Scotland had COVID-19 (95% credible interval: 54,300 to 81,600), equating to around 1 in 80 people.
- In the week ending 11 December 2021, while Delta continues to be the most common variant, the percentage of cases compatible with the Omicron variant (B.1.1.529) increased in England and Scotland, and there were early signs of an increase in Wales.

- The percentage testing positive for COVID-19 by age is shown below.

**10 December - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) increased over the last two weeks, but the trend was uncertain in the week ending 1 December 2021; we estimate that 891,500 people in England had COVID-19 (95% credible interval: 842,000 to 941,200), equating to around 1 in 60 people.
- In Wales, the percentage of people testing positive for COVID-19 appears stable over the most recent three weeks; we estimate that 60,300 people in Wales had COVID-19 (95% credible interval: 49,400 to 71,200), equating to around 1 in 50 people in the week ending 1 December 2021.
- In Northern Ireland, the percentage of people testing positive for COVID-19 increased over the last two weeks, but the trend was uncertain in the week ending 1 December 2021; we estimate that 39,300 people in Northern Ireland had COVID-19 (95% credible interval: 30,600 to 49,000) equating to around 1 in 45 people.
- In Scotland, the percentage of people testing positive for COVID-19 decreased in the week ending 2 December 2021; we estimate that 65,200 people in Scotland had COVID-19, (95% credible interval: 53,200 to 79,100) equating to around 1 in 80 people.
- To date, we have identified a very small number of infections consistent with the Omicron variant (B.1.1.529) among our survey participants, which is not sufficient to produce estimates at this time; we will continue to monitor this variant and will report estimates if the Omicron variant becomes more prevalent among the population.

- The percentage testing positive for COVID-19 by age is shown below.

**3 December 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) has increased in the week ending 27 November 2021; we estimate that 898,900 people in England had COVID-19 (95% credible interval: 847,500 to 951,500), equating to around 1 in 60 people.
- In Wales, the trend in the percentage of people testing positive for COVID-19 was uncertain in the week ending 27 November 2021; we estimate that 64,100 people in Wales had COVID-19 (95% credible interval: 52,100 to 77,500), equating to around 1 in 45 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 continued to increase in the week ending 24 November 2021; we estimate that 41,100 people in Northern Ireland had COVID-19 (95% credible interval: 32,100 to 50,900) equating to around 1 in 45 people.
- In Scotland, the percentage of people testing positive for COVID-19 continued to increase in the week ending 27 November 2021; we estimate that 83,300 people in Scotland had COVID-19, (95% credible interval: 69,100 to 99,700) equating to around 1 in 65 people.
- To date, we have not identified any infections compatible with the new Omicron variant (B.1.1.529) among our survey participants; we will continue to monitor this variant and will report estimates if the Omicron variant becomes more prevalent among the population.

- The percentage testing positive for COVID-19 by age is shown below.

**26 November 2021 - weekly update**

- In England, the trend in the percentage of people testing positive for coronavirus (COVID-19) was uncertain in the week ending 20 November 2021; we estimate that 862,300 people in England had COVID-19 (95% credible interval: 813,800 to 913,300), equating to around 1 in 65 people.
- In Wales, the trend in the percentage of people testing positive for COVID-19 was uncertain in the week ending 20 November 2021; we estimate that 59,100 people in Wales had COVID-19 (95% credible interval: 47,500 to 71,800), equating to around 1 in 50 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 increased in the week ending 20 November 2021; we estimate that 37,300 people in Northern Ireland had COVID-19 (95% credible interval: 28,900 to 46,800) equating to around 1 in 50 people.
- In Scotland, the percentage of people testing positive for COVID-19 increased in the week ending 20 November 2021; we estimate that 75,900 people in Scotland had COVID-19, (95% credible interval: 63,600 to 90,500) equating to around 1 in 70 people.

- The percentage testing positive for COVID-19 by age is shown below.

**19 November 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to decrease in the week ending 13 November 2021; we estimate that 824,900 people in England had COVID-19 (95% credible interval: 775,500 to 873,700), equating to around 1 in 65 people.
- In Wales, the percentage of people testing positive for COVID-19 continued to decrease in the week ending 13 November 2021; we estimate that 55,800 people in Wales had COVID-19 (95% credible interval: 44,800 to 68,100), equating to around 1 in 55 people.
- In Northern Ireland, the trend in the percentage of people testing positive for COVID-19 was uncertain in the week ending 13 November 2021; we estimate that 28,100 people in Northern Ireland had COVID-19 (95% credible interval: 21,300 to 35,900), equating to around 1 in 65 people.
- In Scotland, the percentage of people testing positive for COVID-19 remained level in the week ending 13 November 2021; we estimate that 56,000 people in Scotland had COVID-19 (95% credible interval: 45,500 to 68,100) equating to around 1 in 95 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**12 November 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) decreased in the week ending 6 November 2021; we estimate that 925,400 people in England had COVID-19 (95% credible interval: 875,200 to 975,100), equating to around 1 in 60 people.
- In Wales, the percentage of people testing positive for coronavirus (COVID-19) decreased in the week ending 6 November 2021; we estimate that 64,900 people in Wales had COVID-19 (95% credible interval: 52,700 to 78,200), equating to around 1 in 45 people.
- In Northern Ireland, the trend in the percentage of people testing positive for coronavirus (COVID-19) was uncertain in the week ending 6 November 2021; we estimate that 24,700 people in Northern Ireland had COVID-19 (95% credible interval: 18,000 to 32,400) equating to around 1 in 75 people.
- In Scotland, the percentage of people testing positive for coronavirus (COVID-19) remained level in the week ending 6 November 2021; we estimate that 62,100 people in Scotland had COVID-19, (95% credible interval: 50,000 to 74,500) equating to around 1 in 85 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**5 November 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) has increased more slowly over a two-week period, but the trend was uncertain in the week ending 30 October 2021; we estimate that 1,103,300 people in England had COVID-19 (95% credible interval: 1,042,700 to 1,163,400), equating to around 1 in 50 people.
- In Wales, the trend was uncertain for the percentage of people testing positive for coronavirus (COVID-19) in the week ending 30 October 2021; we estimate that 72,700 people in Wales had COVID-19 (95% credible interval: 58,300 to 88,700), equating to around 1 in 40 people.
- In Northern Ireland, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 30 October 2021; we estimate that 27,400 people in Northern Ireland had COVID-19 (95% credible interval: 20,000 to 37,000) equating to around 1 in 65 people.
- In Scotland, the trend was uncertain for the percentage of people testing positive for coronavirus (COVID-19) in the week ending 30 October 2021; we estimate that 66,000 people in Scotland had COVID-19, (95% credible interval: 52,400 to 81,500) equating to around 1 in 80 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**29 October 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 22 October 2021; we estimate that 1,102,800 people in England had COVID-19 (95% credible interval: 1,043,900 to 1,161,200), equating to around 1 in 50 people.
- In Wales, the percentage of people testing positive for COVID-19 increased in the two weeks up to 22 October 2021, but the trend was uncertain in the most recent week; we estimate that 77,800 people in Wales had COVID-19 (95% credible interval: 64,300 to 92,400), equating to around 1 in 40 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 increased in the week ending 22 October 2021; we estimate that 23,900 people in Northern Ireland had COVID-19 (95% credible interval: 17,000 to 32,300), equating to around 1 in 75 people.
- In Scotland, there were early signs of an increase in the percentage of people testing positive for COVID-19 in the week ending 23 October 2021; we estimate that 71,500 people in Scotland had COVID-19, (95% credible interval: 58,900 to 85,200) equating to around 1 in 75 people.

- The percentage testing positive for COVID-19 by age is shown below.

**22 October 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 16 October 2021; we estimate that 977,900 people in England had COVID-19 (95% credible interval: 926,600 to 1,028,800), equating to around 1 in 55 people.
- In Wales, the percentage of people testing positive for COVID-19 increased in the two weeks up to 16 October 2021, but the trend was uncertain in the week ending 16 October 2021; we estimate that 70,300 people in Wales had COVID-19 (95% credible interval: 57,800 to 84,400), equating to around 1 in 45 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 decreased in the two weeks up to 16 October 2021, but the trend was uncertain in the week ending 16 October 2021; we estimate that 13,900 people in Northern Ireland had COVID-19 (95% credible interval: 9,100 to 19,600), equating to around 1 in 130 people.
- In Scotland, the percentage of people testing positive for COVID-19 continued to decrease in the week ending 16 October 2021; we estimate that 60,100 people in Scotland had COVID-19, (95% credible interval: 47,600 to 74,300) equating to around 1 in 90 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**15 October 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 9 October 2021; we estimate that 890,000 people in England had COVID-19 (95% credible interval: 839,700 to 941,300), equating to around 1 in 60 people.
- In Wales, the percentage of people testing positive for COVID-19 increased in the week ending 9 October 2021; we estimate that 66,200 people in Wales had COVID-19 (95% credible interval: 54,400 to 79,300), equating to around 1 in 45 people.
- In Northern Ireland, the percentage of people testing positive for COVID-19 decreased in the two weeks up to 9 October 2021, but the trend was uncertain in the week ending 9 October 2021; we estimate that 15,100 people in Northern Ireland had COVID-19 (95% credible interval: 9,700 to 21,700), equating to around 1 in 120 people.
- In Scotland, the percentage of people testing positive for COVID-19 continued to decrease in the week ending 9 October 2021; we estimate that 66,600 people in Scotland had COVID-19, (95% credible interval: 53,900 to 80,900) equating to around 1 in 80 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**8 October 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) increased in the week ending 2 October 2021 to an estimated 786,300 people (95% credible interval: 737,600 to 835,300), equating to around 1 in 70 people.
- In Wales, the trend in the percentage of people testing positive was uncertain in the week ending 2 October 2021; we estimate that 56,900 people in Wales had COVID-19 (95% credible interval: 45,700 to 69,300), equating to around 1 in 55 people.
- In Northern Ireland, the percentage of people testing positive decreased in the week ending 2 October 2021; we estimate that 14,500 people in Northern Ireland had COVID-19 (95% credible interval: 9,300 to 20,900), equating to around 1 in 130 people.
- In Scotland, the percentage of people testing positive decreased in the week ending 2 October 2021; we estimate that 84,900 people in Scotland had COVID-19, (95% credible interval: 70,200 to 101,100) equating to around 1 in 60 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**1 October 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to fluctuate; most recently it increased in the week ending 25 September 2021 to an estimated 658,800 people within the community population (95% credible interval: 617,900 to 700,600), equating to around 1 in 85 people.
- In Wales, the percentage of people testing positive increased in the week ending 25 September 2021; we estimate that 53,300 people in Wales had COVID-19 (95% credible interval: 42,700 to 65,300), equating to around 1 in 55 people.
- In Northern Ireland, the trend in the percentage of people testing positive was uncertain in the week ending 25 September 2021; we estimate that 28,000 people in Northern Ireland had COVID-19 (95% credible interval: 20,300 to 37,200), equating to around 1 in 65 people.
- In Scotland, the percentage of people testing positive decreased in the week ending 25 September 2021; we estimate that 97,700 people in Scotland had COVID-19, (95% credible interval: 82,300 to 114,200) equating to around 1 in 55 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**24 September 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) decreased in the week ending 18 September 2021; we estimate that 620,100 people within the community population in England had COVID-19 (95% credible interval: 577,100 to 663,900), equating to around 1 in 90 people.
- In Wales, the percentage of people testing positive increased in the most recent two weeks, but the trend is uncertain in the week ending 18 September 2021; we estimate that 50,700 people in Wales had COVID-19 (95% credible interval: 39,900 to 62,700), equating to around 1 in 60 people.
- In Northern Ireland, the trend in the percentage of people testing positive is uncertain in the week ending 18 September 2021; we estimate that 30,300 people in Northern Ireland had COVID-19 (95% credible interval: 22,800 to 39,200), equating to around 1 in 60 people.
- In Scotland, the percentage of people testing positive appeared level in the week ending 18 September 2021; we estimate that 120,200 people in Scotland had COVID-19, (95% credible interval: 101,000 to 141,500) equating to around 1 in 45 people.
- The percentage testing positive for COVID-19 by region is shown below.

**17 September 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) remained high in the week ending 11 September 2021 but the trend is uncertain; we estimate that 697,100 people within the community population in England had COVID-19 (95% credible interval: 650,600 to 743,800), equating to around 1 in 80 people.
- In Wales, the percentage of people testing positive continued to increase in the week ending 11 September 2021; we estimate that 49,100 people in Wales had COVID-19 (95% credible interval: 38,500 to 61,000), equating to around 1 in 60 people.
- In Northern Ireland, the percentage of people testing positive decreased in the week ending 11 September 2021; we estimate that 25,000 people in Northern Ireland had COVID-19 (95% credible interval: 17,700 to 33,600), equating to around 1 in 75 people.
- In Scotland, the percentage of people testing positive increased in the week ending 11 September 2021, but the rate of increase slowed; we estimate that 120,800 people in Scotland had COVID-19, (95% credible interval: 102,200 to 140,700) equating to around 1 in 45 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**10 September 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) remained level in the week ending 3 September 2021; we estimate that 754,600 people within the community population in England had COVID-19 (95% credible interval: 704,000 to 808,800), equating to around 1 in 70 people.
- In Wales, the percentage of people testing positive increased in the week ending 3 September 2021; we estimate that 46,800 people in Wales had COVID-19 (95% credible interval: 35,700 to 59,500), equating to around 1 in 65 people.
- In Northern Ireland, the trend in the percentage of people testing positive was uncertain in the week ending 3 September 2021; we estimate that 31,800 people in Northern Ireland had COVID-19 (95% credible interval: 23,000 to 41,800), equating to around 1 in 60 people.
- In Scotland, the percentage of people testing positive increased in the week ending 3 September 2021; we estimate that 117,300 people in Scotland had COVID-19, (95% credible interval: 98,300 to 137,300) equating to around 1 in 45 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**3 September 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) was level in the week ending 27 August 2021; we estimate that 766,100 people within the community population in England had COVID-19 (95% credible interval: 714,400 to 821,800), equating to around 1 in 70 people.
- In Wales, the percentage of people testing positive increased in the two weeks up to 28 August 2021, but the trend was uncertain in the most recent week; we estimate that 28,100 people in Wales had COVID-19 (95% credible interval: 20,000 to 38,400), equating to around 1 in 110 people.
- In Northern Ireland, the percentage of people testing positive decreased in the week ending 28 August 2021; we estimate that 28,700 people in Northern Ireland had COVID-19 (95% credible interval: 20,300 to 38,400), equating to around 1 in 65 people.
- In Scotland, the percentage of people testing positive increased in the week ending 28 August 2021; we estimate that 69,500 people in Scotland had COVID-19, (95% credible interval: 55,600 to 84,700) equating to around 1 in 75 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**27 August 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) increased in the week ending 20 August 2021; we estimate that 756,900 people within the community population in England had COVID-19 (95% credible interval: 710,100 to 806,200), equating to around 1 in 70 people.
- In Wales, the percentage of people testing positive continued to increase in the week ending 20 August 2021; we estimate that 25,200 people in Wales had COVID-19 (95% credible interval: 18,000 to 33,500), equating to around 1 in 120 people.
- In Northern Ireland, the percentage of people testing positive increased in the week ending 20 August 2021; we estimate that 43,300 people in Northern Ireland had COVID-19 (95% credible interval: 33,600 to 53,900), equating to around 1 in 40 people.
- In Scotland, the percentage of people testing positive increased in the week ending 20 August 2021; we estimate that 36,700 people in Scotland had COVID-19, (95% credible interval: 27,600 to 47,200) equating to around 1 in 140 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**20 August 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to decrease in the week ending 14 August 2021; we estimate that 698,100 people within the community population in England had COVID-19 (95% credible interval: 648,800 to 747,700), equating to around 1 in 80 people.
- In Wales, the percentage of people testing positive increased in the week ending 14 August 2021; we estimate that 23,500 people in Wales had COVID-19 (95% credible interval: 16,600 to 31,900), equating to around 1 in 130 people.
- In Northern Ireland, the trend in the percentage of people testing positive was uncertain in the week ending 14 August 2021; we estimate that 35,300 people in Northern Ireland had COVID-19 (95% credible interval: 26,200 to 45,500), equating to around 1 in 50 people.
- In Scotland, the percentage of people testing positive continued to decrease in the week ending 14 August 2021; we estimate that 25,900 people in Scotland had COVID-19 (95% credible interval: 18,200 to 34,900) equating to around 1 in 200 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**13 August 2021**** - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to be high in the week ending 6 August 2021; we estimate that 726,700 people within the community population in England had COVID-19 (95% credible interval: 679,300 to 777,800), equating to around 1 in 75 people.
- In Wales, the trend in the percentage of people testing positive is uncertain in the week ending 7 August 2021; we estimate that 14,100 people in Wales had COVID-19 (95% credible interval: 8,900 to 20,500), equating to around 1 in 220 people.
- In Northern Ireland, the percentage of people testing positive continued to be high in the week ending 7 August 2021; we estimate that 34,400 people in Northern Ireland had COVID-19 (95% credible interval: 25,600 to 44,600), equating to around 1 in 55 people.
- In Scotland, the percentage of people testing positive has continued to decrease in the week ending 7 August 2021; we estimate that 28,100 people in Scotland had COVID-19 (95% credible interval: 20,300 to 37,800) equating to around 1 in 190 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**6 August 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) has decreased in the week ending 31 July 2021; we estimate that 722,300 people within the community population in England had COVID-19 (95% credible interval: 671,800 to 775,900), equating to around 1 in 75 people.
- In Wales, the percentage of people testing positive has decreased in the week ending 31 July 2021; we estimate that 13,000 people in Wales had COVID-19 (95% credible interval: 8,200 to 19,000), equating to around 1 in 230 people.
- In Northern Ireland, the percentage of people testing positive has continued to increase in the week ending 31 July 2021; we estimate that 34,400 people in Northern Ireland had COVID-19 (95% credible interval: 24,700 to 45,500), equating to around 1 in 55 people.
- In Scotland, the percentage of people testing positive has continued to decrease in the week ending 31 July 2021; we estimate that 43,000 people in Scotland had COVID-19 (95% credible interval: 33,100 to 54,000) equating to around 1 in 120 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**30 July 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 24 July 2021, though there are possible signs that the rate of increase may have slowed; we estimate that 856,200 people within the community population in England had COVID-19 (95% credible interval: 798,600 to 915,000), equating to around 1 in 65 people.
- In Wales, the percentage of people testing positive continued to increase in the week ending 24 July 2021; we estimate that 18,800 people in Wales had COVID-19 (95% credible interval: 12,700 to 26,000), equating to around 1 in 160 people.
- In Northern Ireland, the percentage of people testing positive continued to increase in the week ending 24 July 2021; we estimate that 27,200 people in Northern Ireland had COVID-19 (95% credible interval: 18,200 to 38,200), equating to around 1 in 65 people.
- In Scotland, the percentage of people testing positive has decreased in the most recent week ending 24 July 2021; we estimate that 49,500 people in Scotland had COVID-19 (95% credible interval: 38,300 to 62,300) equating to around 1 in 110 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**23 July 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 17 July 2021; we estimate that 741,700 people within the community population in England had COVID-19 (95% credible interval: 689,600 to 797,800), equating to around 1 in 75 people.
- In Wales, the percentage of people testing positive increased in the week ending 17 July 2021; we estimate that 14,400 people in Wales had COVID-19 (95% credible interval: 9,500 to 20,500), equating to around 1 in 210 people.
- In Northern Ireland, the percentage of people testing positive increased in the week ending 17 July 2021; we estimate that 10,900 people in Northern Ireland had COVID-19 (95% credible interval: 5,700 to 17,900), equating to around 1 in 170 people.
- In Scotland, the percentage of people testing positive has increased in the most recent two weeks ending 17 July 2021; however, the trend is uncertain in the week ending 17 July 2021, we estimate that 65,100 people in Scotland had COVID-19 (95% credible interval: 51,600 to 80,500) equating to around 1 in 80 people.
- The percentage testing positive for COVID-19 by region is shown below.

- The percentage testing positive for COVID-19 by age is shown below.

**17 July 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 10 July 2021; we estimate that 577,700 people within the community population in England had COVID-19 (95% credible interval: 532,700 to 625,300), equating to around 1 in 95 people.
- In Wales, the trend in the percentage of people testing positive is uncertain in the week ending 10 July 2021; we estimate that 8,400 people in Wales had COVID-19 (95% credible interval: 5,000 to 12,900), equating to around 1 in 360 people.
- In Northern Ireland, the percentage of people testing positive increased in the two weeks up to 10 July 2021, but the trend is uncertain in the week ending 10 July 2021; we estimate that 6,300 people in Northern Ireland had COVID-19 (95% credible interval: 3,100 to 10,700), equating to around 1 in 290 people.
- In Scotland, the percentage of people testing positive continued to increase in the week ending 10 July 2021; we estimate that 60,000 people in Scotland had COVID-19 (95% credible interval: 48,100 to 73,700) equating to around 1 in 90 people.
- In the week ending 10 July 2021, cases that are compatible with the Delta variant B.1.617.2 continued to increase in England and Scotland and increased in Northern Ireland. In Wales, the percentage increased in the two weeks up to 10 July 2021, but the trend is uncertain in the week ending 10 July 2021. The Delta variant is the most common variant across the UK.
- The percentage testing positive for COVID-19 by region is shown below.

**9 July 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 3 July 2021; we estimate that 332,900 people within the community population in England had COVID-19 (95% credible interval: 296,700 to 368,700), equating to around 1 in 160 people.
- In Wales, the percentage of people testing positive continued to increase in the week ending 3 July 2021; we estimate that 9,000 people in Wales had COVID-19 (95% credible interval: 5,300 to 13,600), equating to around 1 in 340 people.
- In Northern Ireland, the percentage of people testing positive increased in the week ending 3 July 2021; we estimate that 6,100 people in Northern Ireland had COVID-19 (95% credible interval: 3,000 to 10,500), equating to around 1 in 300 people.
- In Scotland, the percentage of people testing positive continued to increase in the week ending 3 July 2021; we estimate that 53,200 people in Scotland had COVID-19 (95% credible interval: 41,300 to 67,000) equating to around 1 in 100 people.
- In the week ending 3 July 2021, cases that are compatible with the Delta variant B.1.617.2 have continued to increase in England, Wales and Scotland, and increased in Northern Ireland; the Delta variant is now the most common variant across the UK.

**2 July 2021 - weekly update**

- In England, the percentage of people testing positive for coronavirus (COVID-19) continued to increase in the week ending 26 June 2021; we estimate that 211,100 people within the community population in England had COVID-19 (95% credible interval: 185,200 to 239,300), equating to around 1 in 260 people.
- In Wales, the percentage of people testing positive increased in the week ending 26 June 2021; we estimate that 6,800 people in Wales had COVID-19 (95% credible interval: 3,700 to 11,000), equating to around 1 in 450 people.
- In Northern Ireland, the trend in the percentage of people testing positive remains uncertain in the week ending 26 June 2021; we estimate that 2,800 people in Northern Ireland had COVID-19 (95% credible interval: 1,000 to 5,500), equating to around 1 in 670 people.
- In Scotland, the percentage of people testing positive continued to increase in the week ending 26 June 2021; we estimate that 35,900 people in Scotland had COVID-19 (95% credible interval: 26,500 to 47,200) equating to around 1 in 150 people.
- In the week ending 26 June 2021, cases that are compatible with the Delta variant B.1.617.2 have continued to increase in England, Wales and Scotland, and this continues to be the most common variant group in these countries.