What type of microbes inhabit feces and urine and can make us sick?

Infections.: Usually urine is sterile, so it is not often a problem. The stool, however, is loaded with many types of organisms. There are many illnesses, too many to list here, including bacterial, viral, and parasitic infections, which are spread by fecal contamination. All the more important reason to wash hands thoroughly after using the bathroom! Good luck.