Sorry to have to cut it short (as usual) The part about carriers is basic info though, and obvious enough as to who has consistent skin punctures, but all are not drug users. Landscapers cutting blackberry bushes or even clipping roses can make a way for it to get in.
Anyway, the reason I added this clip today is I had a comment on my other clip "Things I Know That You Should Know", and how he believes that bacteria is generally harmless in a bio-war situation. There are countless bacterias out there that could do the job, but I used Staph as an example because almost everyone has heard of it, or has it, or has had one form or another of the blasted stuff. When it is active in the nose it can spread to the brain as well. It has become very resilient to most antibiotics, and it most certainly can be deadly!