FIG 2.

Composition of the gut microbiota in cases of acute gastroenteritis. (A) Principal-component analysis of square-root-transformed relative abundances showing samples clustering into three possible enterotypes, dominated by Bacteroidetes (Bacteroides OTU0001) (blue), Proteobacteria (Escherichia-Shigella OTU0002) (green), or Firmicutes (Faecalibacterium OTU0003) (red). The sizes of the circles represent the relative abundances (percent) of OTUs within each patient. (B) Network analysis (ensemble between Spearman and Pearson correlations) showing Bacteroidaceae, Rikenellaceae, Lachnospiraceae, and Ruminococcaceae forming a distinct cluster that can be differentiated from a cluster of Enterobacteriaceae, Veillonellaceae, and Streptococcaceae. (C) Heat map of correlations across the top 20 OTUs confirms the relationships observed in the network analysis.