Infectious colitis is an inflammation of the colon caused by infectious agents such as bacteria, viruses, or parasites. Common symptoms include diarrhea, abdominal pain, and fever. It can result from contaminated food or water, and is often associated with outbreaks in crowded settings. Diagnosis typically involves stool tests to identify the specific pathogen. Treatment may include hydration, antibiotics for bacterial infections, and supportive care. Preventive measures include practicing good hygiene and ensuring food safety to reduce the risk of foodborne illnesses and gastroenteritis.