From: Impact of lockdown on Covid-19 case fatality rate and viral mutations spread in 7 countries in Europe and North America
Italy
Spain
France
Germany
UK
Sweden
USA
PCR Tests/1 M inhabitans (a)
36244
41332
16856
30400
19026
11833
22545
Cases/1 M inhabitans (b)
3505
5311
2596
1984
2807
2250
3665
Corrective factor (ρ)
10.34
7.78
6.49
15.32
6.78
5.26
6.15