Asymptomatic Carriage of<i>Clostridium difficile</i>and Serum Levels of IgG Antibody against Toxin A

Abstract

We find no evidence of immune protection against colonization by C. difficile. However, after colonization there is an association between a systemic anamnestic response to toxin A, as evidenced by increased serum levels of IgG antibody against toxin A, and asymptomatic carriage of C. difficile.