With respect to adverse events, the rates were
similar in the two groups. In particular, the rates
of diarrhea were similar. The absence of C. difficile–
associated diarrhea may stem from its relatively
low incidence in patients with low disease
severity and younger age,24-26 characteristics that
were typical of the patients in this trial. Rash has
been a concern with TMP-SMX therapy27; however,
dermatologic side-effect rates were similar in
the two groups. Overall adverse-event rates were
similar in the pediatric and adult subgroups.