Mmm. Well I suppose you can never rule out a commited lunatic having access to the actual bacteria and choosing to spread it, although Ivins (assuming we accept he was the guilty party) deliberately targeted people- this illness wouldn't do that, it would spread very quickly, killing a good proportion of them. i'm not saying that there aren't people who might want to do that, but the intersection of people who want to do that and people with access to it is hopefully rather low- after all, the anthrax attack was an exception.
I'm woefully underinformed on this topic, but this doesn't seem good at all:
I feel as though I ought provide more commentary instead of just an article dump, but I feel more strongly than that that what I have to say would be obvious or stupid or both, so.