Enterocolitis in a Captive Geoffroy's Spider Monkey () and Common Marmosets ()

is a well-documented cause of enterocolitis in several species, including humans, with limited documentation in New World nonhuman primates. We report several cases of -associated pseudomembranous enterocolitis, including a case in a Geoffroy's spider monkey () and several cases in common marmosets (). The histologic lesions included a spectrum of severity, with most cases characterized by the classic "volcano" lesions described in humans and several other animal species. was isolated from the colon of the spider monkey, while the presence of toxin A or toxin B or of the genes of toxin A or B by polymerase chain reaction served as corroborative evidence in several affected marmosets. should be considered a cause of enterocolitis in these species.