<prompt> All are true about post meningococcal reactive disease, EXCEPT:Develops after 4 weeks of meningococcal diseaseMaculopapular or vasculitic rash and polyserositisThese features resolve spontaneously without sequelaeAntibiotic prophylaxis is not needed  <response>: It is immune complex related problem, develops 4-10 days after the onset of meningococcal disease, with manifestations that include a maculopapular or vasculitic rash, and polyserositis with fever. These features resolve spontaneously without sequelae. No need to treatprophylaxis with antibiotic. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 1215 