Infectious colitis classification

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

There is no established classification system for infectious colitis. However, it may be classified based on class of the causative pathogen, route of infection, and duration of symptom. Based on the causative pathogen, infectious colitis may be classified into bacterial, viral, protozoan and fungal.

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

• 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: Aspergillus, blastomyces, coccidioides

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

• Acute: Colitis develops within 14 days of diarrhea.^[1]
• Chronic: Colitis develops 30 days or longer after diarrhea.^[1]

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