And now there is a homeless man who rode in the ambulance with the first US Ebola case - and he is missing. Not a good scenario.

Well, Ebbie, the BIG difference with the UK is that we have a National Health Service (until the fucking conservatives finish selling it off) so people are not afraid to go to hospital in case they get bankrupted. Bear in mind that the general assumption is that people who are asymptomatic are not infectious, so if people go straight to a doctor or hospital (and do not lie, for fear of cost, that they have not been exposed) when symptoms show, the prospects for containment are better.