There would be insufficient space in our large public hospitals to deal with not only this, but other more severe contagions. What happens at present, is that during the cooler months, there is an influx of severe flu sufferers, they get lumped into any hospital wards with isolation rooms, and the regular patients, e.g. renal, blood cancer etc get pushed out into other wards. The trouble is, there are not enough rooms. We need purpose built facilities or other public facilities as people have posted above, that are readily wired and plumbed and can be repurposed at short notice. There are some private hospitals with ghost wards, and they could also fill that void.
If we did evacuate our citizens from Wuhan or other parts in China, it would have been ideal to fly them into Watson, have a makeshift (better still, purpose built) medical centre and accommodation for processing and identifying potential cases allowing for incubation, and then releasing them into the general community if given the all clear. No island to escape from, just harsh desert.