The bacteria identified as being definitive triggers of ReA include enteric organisms Shigella, Salmonella, Yersinia, Campylobacter species; and genitourinary infection with Chlamydia trachomatis; there is also evidence implicating Clostridium difficile, certain toxigenic Escherichia coli, and possibly other agents.
Section 12. Allergy, Clinical Immunology, and Rheumatology