The NHS Covid app sent 689,313 close contact alerts to users in England and Wales in the week to 21 July

600,000

500,000

400,000

300,000

200,000

100,000

0

5 May

2 Jun

30 Jun

21 Jul

600,000

500,000

400,000

300,000

200,000

100,000

0

10 Feb

10 Mar

7 Apr

5 May

2 Jun

30 Jun

21 Jul

600,000

500,000

400,000

300,000

200,000

100,000

0

7 Apr

5 May

2 Jun

30 Jun

21 Jul

Guardian graphic. Source: NHS