And yeah, if you get the impression I sound a little spooked by the thing, I am. My undergraduate study was pathogenic microbiology. I've handled pathogenic bacteria a fair amount but you don't touch anything like this outside a Class 4 containment facility, it's that nasty.
OK, you’ve been indoctrinated, so I’ll waste no more time, but there is much out there on SP contagion that shows bug bites is the main mode. The condition of individuals’ immune systems can of course inject variability to this question, and for that reason, I may be the wrong person to be discussing it, since I mostly just don’t catch things.