[ElkGroveDan]

This is a really disturbing problem that I learned about in the last year or so. It is a key part of the story line in the 2007 novel See No Evil: by Allison Brennan.

(It's a great gripping mystery novel regardless.)

[Skid Marx]

Solzhenitsyn mentions this in The Gulag Archipelago; floss your teeth with a piece of thread, swipe a needle, thread dirty floss through skin on your leg. In an amazingly short time your leg swells up and turns to pus. Scares the doctor all to hell. If you're lucky, you can skip work for a month. If not, you get gangrene and then, oh well.