In the long run, the likelihood of contracting it is probably 1. The virus will most likely sweep the globe long before a vaccine is ready, which will take several more months. Some carriers have been unknowingly walking around with it for weeks, infecting many more (because for some there are no symptoms and for those who experience symptoms, the disease becomes infectious before they do).
China fucked it up when they kept quiet about it in December and instead punished the messenger.