<prompt> The most common hospital-acquired nosocomial infection is -Urinary tract infectionPneumoniaSurgical wound infectionBacteremia  <response>: The most common hospital-acquired infection is urinary tract infection UTI, which accounts for almost 40 of all nosocomial infections . Most hospital-acquired UTIs are associated with urinary catheters, a commonly used device among hospitalized patients. Ref Davidson 23rd edition pg 630 