After we realized that we had uncontrollable spread, we should have done what most epidemiologists were recommending: Use social distancing until we had it under control enough for contact tracing to work. Reopen when you have enough testing+tracing to control the spread.
I know that people dismiss South Korea's success because it is easier to control importation of the virus when you are a small country (that is almost an island, given the negligible movement between S. and N. Korea). But that ignores the fact that they had over 10K cases very early (early March or Feb). If you have 10K cases in your country, you can't control it by being lucky and being isolated. Quarantining travelers, Isolating suspected cases and vigorous contact tracing worked. Currently they are around 7 deaths per million, while we are at 616 deaths/million. That is a huge difference.
I know that people dismiss South Korea's success because it is easier to control importation of the virus when you are a small country (that is almost an island, given the negligible movement between S. and N. Korea). But that ignores the fact that they had over 10K cases very early (early March or Feb). If you have 10K cases in your country, you can't control it by being lucky and being isolated. Quarantining travelers, Isolating suspected cases and vigorous contact tracing worked. Currently they are around 7 deaths per million, while we are at 616 deaths/million. That is a huge difference.