And then you've got to lock down the next region, which re-infects the first region or you've got to keep the lock-down there happening, and so on, and so on. D

And then you've got to lock down the next region, which re-infects the first region or you've got to keep the lock-down there happening, and so on, and so on. Did you not think this through? Essentially the whole things a massive balancing act, allow a certain amount of infections, but not too many the health service gets overwhelmed. Even China's now getting more infections from outside than in, which is only going to grow. The consensus is that you can't stop it now. So your plan might be an even worse idea, a cascading lock down, that lasts even longer. The only hope being summer stops it like flu, but then you're left with a potential resurgence in autumn and even more lock downs.