The infection is spread by saliva, urine, respiratory droplets, sexual contact, and blood transfusions. Most people are exposed to the virus in their lifetime, but it usually produces mild or no symptoms in healthy people. However, serious CMV infections can occur in people with weakened immune systems. This includes patients receiving chemotherapy for cancer and patients on immune-suppressing medicines following an organ transplant. In rare instances, more severe CMV infection involving the GI tract has been reported in people with a healthy immune system. Risk factors The systemic use of corticosteroids in the context of inflammatory bowel disease.
Cytomegalovirus colitis
Lymphocytic colitis
Collagenous colitis
Microscopic colitis
Diversion colitis
Campylobacteriosis
Cyclosporiasis
Chemical colitis