Viruses, bacteria, and parasites are living organisms that are found all around us. They are in water and soil, and on the surfaces of foods that we eat. They are also on surfaces that we touch, such as counter tops in the bathroom or kitchen. Some bacteria live in and on our bodies and don't cause problems. Other kinds of bacteria (as well as parasites and viruses) can make us very sick if they get inside our bodies.In this segment, Dr. Asuncion Soriano, Pediatric Gastroenterologist and member of the medical staff at Doctors Hospital of Laredo, discusses intestinal parasites, diarrhea in children and what to do if you suspect that you or your child might have an intestinal parasite.