Probably no one could answer that yet, Popsnstuff. The best guess they have is to compare it with the flu viruses, which can cause illness in the same person more than once. Also, the flu vaccine is no guarantee against the disease. All it means is that vaccinated individuals who get the flu anyway, usually get a milder case. They are working on a vaccine for this one now, though it sounds like it will be several years before it can even be used. They are currently testing different vaccines on animals.
No one can predict the future, but all this talk about panic buying, stockpiling items, etc. sounds a bit hysterical to me. Even if there is a bit of a shortage for a while, I really think we can survive that.
One Eyed, the problem with stockpiling meds is that, in my case anyway, I can't renew prescriptions until a certain date has been reached.