1. The bacteria aren't actually eating your flesh. The various species—including some that cause strep and staph—enter a wound, scrape, or bug bite and unleash a flood of toxic chemicals that kill surrounding tissue cells.
2. At least 650 cases crop up each year in the US—and about a quarter prove fatal. Flesh-eating bacteria have claimed the life of particle physicist Alexandru Marin, a chunk of the right leg of science fiction writer/marine biologist Peter Watts, and some of Slayer guitarist Jeff Hanneman's right arm.