Haran JP, et al. - Medication exposures were examined to determine whether the risk of recurrent Clostridium difficile infection (rCDI) differed according to living environment. Compared to antibiotic use, the risk of rCDI was greater with acid-reducing medication use after initial Clostridium difficile infection treatment, even though the risk varied depending on the living environment. In nursing home (NH) residents, corticosteroid use was correlated with greater risk of recurrence but lower the risk in community-dwelling elderly adults.