Fig. 8

Significant bacterial taxa between subgroups. a Cladogram based on the linear discriminant analysis effect size (LEfSE) method, differential feature plots meaning for LEfSe were seen in Additional file 1 and b Linear discriminant analysis (LDA) coupled with LEfSE between the Pre-VAI and Post-VAI groups; the results indicated that the taxa Post-VAI were enriched for Bacteroidetes, Bacteroidales, and Bacteroidia (red) compared to those Pre-VAI, while Pre-VAI were enriched for Bifidobacterium, Bifidobacteriaceae, Bifidobacteriales, and Actinobacteria (green) compared with those Post-VAI