Recent Advances in Understanding the Microbiology of the Female Reproductive Tract and the Causes of Premature Birth

Table 1

Most commonly observed taxa in the vaginal bacterial community groups defined by Ravel et al. [42].

Group I (𝑁^∗=105)			Group II (𝑁=25)			Group III (𝑁=135)			Group IV (𝑁=108)			Group V (𝑁=21)
Taxa	Percentage of samples		Taxa	Percentage of samples		Taxa	Percentage of samples		Taxa	Percentage of samples		Taxa	Percentage of samples
L.crispatus	100.0		L.gasseri	100.0		L.iners	100.0		Prevotella	99.1		L.jensenii	100.0
Lactobacillales.6	99.1		Anaerococcus	84.0		Lactobacillales.2	97.8		Dialister	93.5		Lactobacillales.5	95.2
L.iners	76.2		Lactobacillales.1	84.0		Lactobacillales.5	97.0		Peptoniphilus	88.9		L.iners	66.7
Lactobacillales.5	71.4		Peptoniphilus	76.0		Prevotella	56.3		Anaerococcus	80.6		Prevotella	61.9
L.jensenii	69.5		Prevotella	72.0		L.crispatus	53.3		Atopobium	79.6		Finegoldia	61.9
L.vaginalis	64.8		Dialister	68.0		L.jensenii	51.1		L.iners	78.7		Corynebacterium	61.9
Prevotella	53.3		L.iners	60.0		Ureaplasma	48.9		Gardnerella	78.7		L.crispatus	57.1
L.gasseri	49.5		Finegoldia	60.0		Dialister	40.0		Megasphaera	76.9		L.gasseri	52.4
Anaerococcus	41.9		Streptococcus	56.0		Finegoldia	39.3		Sneathia	70.4		Lactobacillales.7	52.4
Finegoldia	41.0		Atopobium	52.0		L.gasseri	38.5		Eggerthella	70.4		Streptococcus	47.6
Corynebacterium	37.1		Corynebacterium	52.0		Corynebacterium	38.5		Parvimonas	70.4		Anaerococcus	42.9
Ureaplasma	33.3		L.vaginalis	48.0		Anaerococcus	36.3		Finegoldia	67.6		Peptoniphilus	42.9
Lactobacillales.2	32.4		Staphylococcus	44.0		L.vaginalis	34.8		Ruminococcaceae.3	67.6		Dialister	38.1
Peptoniphilus	31.4		Gardnerella	44.0		Peptoniphilus	34.1		Prevotellaceae.2	67.6		Staphylococcus	33.3
Staphylococcus	29.5		L.crispatus	36.0		Streptococcus	31.1		Aerococcus	63.0		L.vaginalis	33.3
Streptococcus	28.6		Lactobacillus.1	36.0		Staphylococcus	31.1		Mobiluncus	61.1		Ureaplasma	28.6
Dialister	24.8		Lactobacillales.5	36.0		Atopobium	25.2		Anaeroglobus	59.3		Gardnerella	28.6
Lactobacillus.2	23.8		Ureaplasma	32.0		Aerococcus	23.7		Porphyromonas	56.5		Lactobacillales.2	28.6
Atopobium	21.0		Actinomyces	32.0		Sneathia	23.0		Gemella	54.6		Propionibacterium	28.6
Megasphaera	20.0		L.jensenii	28.0		Megasphaera	20.7		L.crispatus	51.9		Atopobium	19.0
Exiguobacterium	17.1		Bacteroides	24.0		Lactobacillales.7	18.5		Corynebacterium	51.9		Clostridiales.17	19.0
Clostridium	14.3		Clostridiales.17	24.0		Veillonella	16.3		Ruminococcaceae	50.9		Gemella	19.0
Clostridiales.17	13.3		Campylobacter	24.0		Peptostreptococcus	16.3		Peptostreptococcus	48.2		Varibaculum	19.0
Lactobacillus.4	13.3		Lachnospiraceae.7	24.0		Gemella	15.6		Streptococcus	46.3		Megasphaera	14.3
Bacteroides	12.4		Bifidobacterium	24.0		Lactobacillales.1	15.6		Ruminococcaceae.4	46.3		Bacteroides	14.3
Aerococcus	10.5		Parvimonas	20.0		Gardnerella	14.8		Prevotellaceae.1	45.4		Peptostreptococcus	14.3
Lactococcus	10.5		Porphyromonas	20.0		Lactobacillus.2	14.1		Ureaplasma	39.8		Lachnospiraceae.7	14.3
Sneathia	9.5		Varibaculum	20.0		Clostridiales.17	12.6		Clostridiales.17	37.0		Actinomyces	14.3
Parvimonas	9.5		Exiguobacterium	20.0		Porphyromonas	11.9		Segniliparus	37.0		Coriobacteriaceae.1	14.3
Total number of taxa observed in all samples within a group	174			125			169			232			105

∗Total number of subjects within a group.