Well it worked in Taiwan. Of course it did not work in Italy as many people crossed into Italy with the virus. That's open borders for you. Of course Italy banned Taiwanese claiming Taiwan is part of China which of course it never has been.
I've seen some cheap 3 day Komodo packages advertised now. Might take one when I go to Bali soon.
In reality, we did not really understand where the virus arrived from, but it appears it did not arrive directly from Chinese people. No connection was found between the first wave of infected and China. There was some connection with Germany, but in the end we did never find patient #0.
Patient #1 was a very active young man, which in just one week had strict contacts with hundredths of people, infecting most of them. Which in turns infected other thousands, and now we have pandemic.
I do not think that this could had been prevented in any way.
Now here the whole country is locked at home, shops are closed, and people work form home through the computer. It is forbidden to exit, if yo do not have valid reasons, which you must write down and sign. And if you write a false justification, it is a penal crime with severe fines. Police is controlling at critical points and stop people asking for the written document. Our towns are desert. It is something never seen, except some catastrophic films about nuclear war.
The incredible thing is the silence. Our towns have always been very noisy, and now you only hear birds or dogs barking far away. Or ambulances. Even in the bad days of the oil crisis in 1973, when it was forbidden to use any motorised vehicle, there was not this surreal silence, as people where walking all around and chatting loudly.
Now Parma seems a ghost town, and the TV shows similar scenes also in Milan, in Rome, etc...