Who's worried? 
Varche apparently 
Quite wrong. I am not worried. As it happens our lifestyle and location means we would probably be one of the few to survive a black plague type event.
I am interested in the mechanics of a lock down. Easier to achieve in a country like China. Anyway, no one else is interested which is fair enough.
Sorry Varche, I will try and answer you as best I can.
I really do not believe a complete lock down is possible without the consent, without exception, of all the population. Yes, a state can stop the running of public transport, and most of the private means to get around, but it is not possible to stop ALL movement, even in a state like China. However, the majority of their population appears to be completely controllable by simply the State saying “you will” or “you will not”. But even if a tiny percentage ignore that official line, and want to travel, they will. The country is just too geographically large to stop it entirely.
Not believable? Well even the totalitarian Nazi Third Reich, with all the ‘instant’ penalties of disobedience available, could stop the resistance fighters, and Germans who opposed Hitler. Movement was always possible, and never stopped entirely. So, without 100% lock down compliance, the disease, like the rats and their fleas, will never be completely stopped from spreading within China (and beyond?)
