<prompt> Nosocomial infections are diagnosed after how many hours of hospitalization admission?24 hours48 hours72 hours96 hours  <response>: Nosocomial infections-Defined as those infections occurring within 48 hours of hospital admission, 3 days of discharge or 30 days of an operation.Gram-positive bacteria are the commonest cause of nosocomial infections withStaphylococcus aureusbeing the predominant pathogen. 