Table I.

Taxa that discriminate between viral etiology of children with severe bronchiolitis

RSV only vs. HRV only
OTU ID#	Taxonomic Classification	Change
122	Porphyromonas	Increased in HRV only
350	Prevotella	Increased in HRV only
1337	Prevotella	Increased in HRV only
232	Fusobacterium	Increased in HRV only
297	Leptotrichia	Increased in HRV only

Single (RSV or HRV) vs. Co-infection
OTU ID#	Taxonomic Classification	Change
1878	Haemophilus	Increased in co-infection
1558	Haemophilus	Increased in co-infection
1944	Actinomyces	Increased in co-infection

RSV only vs. Co-infection
OTU ID#	Taxonomic classification	Change
1878	Haemophilus	Increased in co-infection
1558	Haemophilus	Increased in co-infection
1337	Prevotella	Increased in co-infection
350	Prevotella	Increased in co-infection

HRV only vs. Co-infection
OTU ID#	Taxonomic Classification	Change
1878	Haemophilus	Increased in co-infection
1558	Haemophilus	Increased in co-infection
213	Propionibacterium	Increased in HRV only
252	Moraxella	Increased in co-infection

Acute Wheeze on Admission vs. Absence of Acute Wheeze on Admission
OTU ID#	Taxonomic Classification	Change
122	Porphyromonas	Increased in acute wheeze
350	Prevotella	Increased in acute wheeze
1558	Haemophilus	Increased in acute wheeze
296	Moraxella	Increased in acute wheeze
834	Staphylococcus	Increased in no acute wheeze
240	Staphylococcus	Increased in no acute wheeze