nosocamial infection after how many hours ?

*Any infection causing illness that was not present or in its incubation period when the subject entered hospital or received treatment in outpatient clinic. *Infections are considered Nosocomial if they first appear 48 hours or more after hospital admission or within 30 days after discharge. *"Nosocomial" comes from two Greek words- "nosus" meaning "disease"+"komeion" meaning "to take care of"----disease contracted by a patient while under medical care. ref : harrisons 21st ed