Parvimonas micra | Bacteria

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Parvimonas micra used to be known as Peptostreptococcus micros. Like P. stomatis it is a common oral microbiont and a member of Gram-positive anaerobic cocci (GPAC) known to cause several clinical infections in people that have elevated risk. P. micra is often found in infected root canals but has also been associated with meningitis, cervical and brain abscesses, infective endocarditis, spondylodiscitis and gastro-intestinal infections. In patients with colorectal cancer the relative abundance of P. micra was consistently higher than in healthy controls. There seems to be a pattern of P. micra and F. nucleatum being abundant together which suggests cooperation between the two organisms in disease.