I think it is an interesting case. It seems that shutting everything down and locking everybody in their homes is still the fastest method. But if you look at

I think it is an interesting case. It seems that shutting everything down and locking everybody in their homes is still the fastest method. But if you look at the outcome and impact on entire country investing in aggressive testing and tracking cases seems better return on investment even with higher number of cases. One potential problem I see with this is locking everything is easier to implement and has less risk that it won't work at all. With a week delay between your actions and the results, not restraining your population and instead hunting cases might put you in a situation where you suddenly learn your actions had no effect and now it is too late for drastic lockdown to rein in the cases.