<prompt> Which of the following is not true about Nosocomial infection?May also be present at the time of admissionPresents within the period of hospital admissionMay also develop symptoms after discharge from hospitalIt is unrelated to the primary illness of the patient  <response>: Nosocomial infection occurs only after hospital admission, and are neither present nor incubating at the time of patients admission. Most nosocomial infections become clinically apparent during hospitalization whereas those with long incubation period or with long latency may become apparent after hospital discharge. 