[Goose]

An alternative is aggressive tracking and tracing.  But it would have to be aggressive, and would require putting a lot of people in quarantine.

BC

As I see it, that is really the only alternative. An exposed person can test negative at day N and also become positive (and spreading the disease) at day N + 1 through probably day N + <incubation period>, give or take. The best approach is quarantine all the contacts of any positive case for at least <incubation period>, and then test them. If they are negative, assume they don't have it and let them go. The incubation period is on the order of two weeks, as I understand it. I see no other choice. The definition of "contacts" is a bit of a problem, but I am sure that will sort itself out. Start with a very inclusive one and see what happens. Better than a total lockdown of everybody.

[Goose]

An alternative is aggressive tracking and tracing.  But it would have to be aggressive, and would require putting a lot of people in quarantine.

BC

As I see it, that is really the only alternative. An exposed person can test negative at day N and also become positive (and spreading the disease) at day N + 1 through probably day N + <incubation period>, give or take. The best approach is quarantine all the contacts of any positive case for at least <incubation period>, and then test them. If they are negative, assume they don't have it and let them go. The incubation period is on the order of two weeks, as I understand it. I see no other choice. The definition of "contacts" is a bit of a problem, but I am sure that will sort itself out. Start with a very inclusive one and see what happens. Better than a total lockdown of everybody.