Reactive ahritis is usually caused by:: (A) Shigella flexneri, (B) Shigella boydii, (C) Shigella shiga, (D) Shigella dysenteriae
Answer is A. Organisms that have been associated with Reiter Ahritis include the following: C trachomatis (L2b serotype) Ureaplasma urealyticum Neisseria gonorrhoeae Shigella flexneri Salmonella enterica serovars Typhimurium Mycoplasma pneumoniae Mycobacterium tuberculosis Yersinia enterocolitica and pseudotuberculosis Campylobacter jejuni Clostridium difficile Beta-hemolytic (example, group A) and viridans streptococci