FMT swiftly remedied all 14 patients’ C. diff symptoms—within two to three days—and led to an eventual redistribution of the microbial composition to resemble healthier diversity. Specifically, the team pinpointed certain microbes that were generally reduced in RCDI patients but partially restored five or more months after FMT. But given their sample size, the researchers could not pinpoint any bacterial groups that were significantly associated with RCDI or successful FMT treatment.