Figure 2.

Relative abundances of bacterial taxa composing the fecal bacterial communities from hospitalized infants with acute bronchiolitis. For RSV-positive and RSV-negative infants’ groups, the proportions of major bacterial phyla (A) and top-20 bacterial genera (B) were computed, normalized, and presented as stacked-bar plots per group of (A) or single (B) fecal samples (here indicated with designation codes, e.g., bronchiolitis (BRO)-pediatrics (PED)03), respectively. Shown is the phyla Actinobacteria, Bacteroidetes, Firmicutes, and Proteobacteria along with other phyla, which include Fusobacteria, Tenericutes, and Verrucomicrobia. In each plot (A) or group of plots (B), “positive” and “negative” indicate infants whose nasopharyngeal samples were, respectively, positive for RSV or negative for RSV at molecular testing (see text for details). RSV, respiratory syncytial virus.