I dont see this becoming mandatory anytime soon unless the virus becomes unmanageble to the extent that people are dropping on the streets like flies. Its in the trial period and like any other form of hemmorrhagic fever, they are desperate for a cure. If you look at the nature of most deadly viruses, you see that there is a pattern and the evolve very quickly becomeing almost resistant to standard treatments, and becoming unmanagebale. Take for example the case of TB..... To completely treat it one has to take a combination of at least 3 different drugs for a minimum of 6-9 months because that has been proven to be the only way to bypass resistance. It is also under stickt control of public health officials to ensure compliance. For this reason if you even as much as work near any health facility, they screen you for TB, even if you just deliver items, they need reassuarance. It will take years to complete all studies on the vaccines available before they could even think of making it mandatory anywhere.