<prompt> Which of the following causes highest risk of nosocomial infection to a patientPatient admitted for elective surgeryHIV patient coming in follow up OPDPatient undergoing endoscopyPatient admitted for normal delivery  <response>: While all hospitalized patients are at risk for HAI, ceain subpopulations are at increased risk. These include the elderly, the immune-compromised, the very young or premature, and burn and surgical patients. Ref: Ananthanarayana panikers 9th edition 