system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Reactive arthritis is usually caused by -
assistant
The correct answer is  Ans. is 'a' i.e.. Shigella Flexneri o Organisms that have been associated with Reiter Arthritis include the follow ing:C trachomatis (L2b serotype)Ureaplasma urealyticumNeisseria gonorrhoeaeShigella flexneriSalmonella enterica serovars TyphimuriumMycoplasma pneumoniaeMycobacterium tuberculosisYersinia enterocolitica and pseudotuberculosisCampylobacter jejuniClostridium difficileBeta-hemolytic (example, group A) and viridans streptococci