Intestine Crohn’s Disease A mystery surrounding Crohn’s disease, a type of inflammatory bowel disease, may have been solved by a new study. This image depicts an intestine affected by Crohn’s disease. ========================================================= New research may have solved a mystery surrounding Crohn’s disease, a type of inflammatory bowel disease where immune defenses meant to attack invading microbes mistakenly target the body’s own digestive tract instead. Norovirus is a common infection that causes vomiting and diarrhea. It is also one of several viruses and bacteria thought to trigger disease onset in people with Crohn’s disease, but the field does not know why....