
Both patients with early rheumatoid arthritis (ERA) and those at-risk for developing rheumatoid arthritis (RA) had a significantly different oral microbiome when compared with a control group. Most notably, the pro-inflammatory discriminative zero-radius operational taxonomic units (zOTUs), Prevotella and Veillonella, were much more prevalent in these groups than in patients with no history of autoimmune conditions.














