Table 2.

Abundance of the most prevalent bacteria in endometrial and vaginal microbiota.

Site	Bacterial genus	Samples with prevalence > 1%	Distribution of the prevalencea (%)	Most prevalent species	Dominant species (> 90%)
Endometrial cavity	Lactobacillus	44 (83%)	13 [3—37]	16 (30%)	4 (8%)
	Propionibacterium	42 (79%)	7 [4–14]	2 (4%)	0 (0%)
	Pelomonas	39 (74%)	6 [2–9]	4 (8%)	0 (0%)
	Pseudomonas	32 (60%)	8 [2–14]	3 (6%)	0 (0%)
	Streptococcus	30 (57%)	2 [1–3]	1 (2%)	0 (0%)
	Escherichia shigella	27 (51%)	4 [1–11]	4 (8%)	2 (4%)
Vagina	Lactobacillus	48 (91%)	83 [27—99]	29 (55%)	22 (42%)
	Gardnerella	17 (32%)	31 [15—62]	8 (15%)	1 (2%)
	Bifidobacterium	14 (26%)	50 [8—87]	7 (13%)	4 (8%)

For the most common bacteria, the table illustrates the frequency of specimen clearly demonstrating its presence (prevalence > 1%), their Median [interquartile range] distribution, when they are the prevalent species (“Most prevalent species”) and the frequency of specimen showing a strong dominance of that species (“Dominant species”, i.e., when the species represented > 90% of the detected bacteria). Data is reported as number (%) or Median [interquartile range], as appropriate.

^aThis data refers exclusively to samples showing a prevalence of the genera above 1%.