Salmonella typhi was cultured from the operative wound drainage of a patient who had had acute typhoid fever 58 years previously and from the gallbladder of a patient with cholecystitis. Neither patient was a known typhoid carrier. According to the literature, such unexpected recovery of S typhi seems to be unusual but not rare. These patients are a hospital infection hazard that can be discovered by culturing postoperative infections and gallbladders and gallstones removed at operation.
Reisig G, Schaffner W. Postoperative Detection of Salmonella typhiAn Unexpected Hospital Infection Hazard. Arch Surg. 1972;104(3):349-350. doi:10.1001/archsurg.1972.04180030095024