Infectious colitis classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Qasim Salau, M.B.B.S., FMCPaed [2]

Overview

There is no established classification system for infectious colitis. However, it may be classified based on class of micro-organism, route of infection, and duration of symptom.

Classification

There is no established classification system for infectious colitis. However, it may be classified based on class of micro-organism, route of infection, and duration of symptom.

Classification by class of micro-organism

• Bacteria: Clostridium difficile, Shigella dysenteriae, Escherichia coli O157:H7, Campylobacter jejuni, Chlamydia trachomatis, Neisseria gonorrhoeae, Salmonella spp, Treponema pallidum, Yersinia enterocolitica
• Virus: Cytomegalovirus
• Protozoan: Entamoeba histolytica, Giardia lamblia
• Fungi:
• Atypical micro-organism: Chlamydia'' trachomatis

Classification by route of infection

• Fecal-oral: Shigella dysenteriae, Escherichia coli O157:H7
• Rectal route: lymphogranuloma venereum (LGV)

Classification by duration of symptoms

• Acute: Colitis develops within 14 days of diarrhea.
• Chronic: Colitis develops 30 days or longer after diarrhea.