“…To simplify the influence of FMT on gut microbiota, studies among specific populations, such as groups with malignancy or inflammatory bowel disease, are not discussed in this review [ 16 ]. Since the poor bacterial diversity is correlated with rCDIs in clinical patients, the efficacy of FMT in preventing rCDIs has been correlated with the restoration of the disturbed and poor diversity of gut microbiota due to the disruption by antibiotic exposures [ 17 , 18 ], for example, replanting the genera of Bacteroidetes [ 16 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ], Firmicutes [ 23 , 25 ], Faecalibacterium [ 16 , 26 ], or Bifidobacterium [ 27 ], and conveniently decreasing Proteobacteria [ 22 , 25 , 28 ], Enterobacteriaceae [ 29 , 30 ], or bacteria harboring antibiotic-resistant genes within the microbiota [ 25 ].…”