A nationwide study published by the USDA in 1996 found that [...] 78.6 percent of the ground beef contained microbes that are spread primarily by fecal matter. The medical literature on the causes of food poisoning is full of euphemisms and dry scientific terms: coliform levels, aerobic plate counts, sorbitol, MacConkey agar, and so on. Behind them lies a simple explanation for why eating hamburger meat makes you sick: There is shit in the meat.