I think this story was floating around here a few months ago. What are the odds of dying from this bacteria? Nearly astronomical? I wouldn't count on it for reliable death. Most just get sick and feel miserable.
Now, if there were some way to capture these bacteria, grow, and multiply them, and then figure out how to consume them all at once...............it might prove effective, but I bet it would be a painful way to go. I bet how effective something like this is has a lot to do with the person's system, too.