<prompt> Recommended adult prophylaxis for meningococcal infection is;Rifampicin 600 mg twice daily for 2 daysAmpicillin Ig daily for 5 daysTetracycline 2 g daily for 1 dayChloramphenicol 2 g daily for 2 days  <response>: Rifampicin 600 mg twice daily for 2 days Recommended adult prophylaxis for meningococcal meningitis is rifampicin 600 mg twice daily for 2 days. Chemoprophylaxis is recommended for close contacts of persons with meningococcal disease. 