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Detection of Free Toxin B in the Stool of Asymptomatic Clostridioides difficile Carriers by the Cell Cytotoxicity
Lorne Schweitzer1,2,3, Phillippe Gervais4,5, Bianka Paquet-Bolduc4
1McGill University Faculty of Medicine, Montreal, Québec, Canada.
Open Forum Infectious Diseases
|June 11, 2021
Abstract:
Cell cytotoxicity neutralization assay (CCNA) is considered to be a gold standard to diagnose Clostridioides difficile infections. We performed CCNA on 77 consecutive admission screening rectal swabs from asymptomatic toxigenic C. difficile carriers. Thirty-nine percent of specimens from asymptomatic carriers were positive. Thus, CCNA specificity may be lower than previously thought.
