<prompt> Nosocomial infections are those which develop:24 hours after hospitalizationWithin 48 hours of hospitalizationAfter 48 hours of hospitalizationAfter 7 days of hospitalization  <response>: Ans. c After 48 hours of hospitalizationRef.: K. Park 23rd ed. 94, 359 Nosocomial infections are hospital acquired infections. It is considered nosocomial if it develops after a minimum of 48 hours of hospitalization. Most common organism responsible for nosocomial infection: Staph. Aureus. 