Slovakia just tested their whole adult population with antigene tests: https://www.euronews.com/2020/11/03/slovakia-attempts-to-test-entire-adult-population-for

Slovakia just tested their whole adult population with antigene tests: https://www.euronews.com/2020/11/03/slovakia-attempts-to-test-entire-adult-population-for-coronavirus https://www.euronews.com/2020/11/03/slovakia-attempts-to-tes... Yes, it's just a couple milion people & antigen tests are not 100% precize, but it demonstrates something like this can be done.