Longitudinal investigation of carriage rates and genotypes of toxigenicClostridium difficilein hepatic cirrhosis patients

Abstract

AbstractToxigenicClostridium difficile(C. difficile) carriers represent an important source in the transmission ofC. difficileinfection (CDI) during hospitalisation, but its prevalence and mode in patients with hepatic cirrhosis are not well established. We investigated longitudinal changes in carriage rates and strain types of toxigenicC. difficilefrom admission to discharge among hepatic cirrhosis patients. ToxigenicC. difficilewas detected in 104 (19.8%) of 526 hepatic cirrhosis patients on admission, and the carriage status changed in a portion of patients during hospitalisation. Approximately 56% (58/104) of patients lost the colonisation during their hospital stay. Among the remaining 48 patients who remained positive for toxigenicC. difficile, the numbers of patients who were positive at one, two, three and four isolations were 10 (55.6%), three (16.7%), two (11.1%) and three (16.7%), respectively. Twenty-eight patients retained a particular monophyletic strain at multiple isolations. The genotype most frequently identified was the same as that frequently identified in symptomatic CDI patients. A total of 25% (26/104) of patients were diagnosed with CDI during their hospital stay.Conclusions:Colonisation with toxigenicC. difficilestrains occurs frequently in cirrhosis patients and is a risk factor for CDI.