TABLE 2.

Overview of all community structure types and their characteristic species by amplicon sequencing^a

Structure type	Characteristic species	Sample(s)	Shannon index (mean H′ ± SD)
1	Citrobacter koseri Citrobacter spp. Lactobacillus iners	U26a	0.21
2	Fannyhessea vaginae Sneathia sanguinegens	U15a	0.59
3	Lactobacillus iners Prevotella timonensis	U1b, U8a, U5a, U11a, U2a, U22a, U12a, U25a	0.56 ± 0.42
4	Anaerococcus tetradius Prevotella timonensis Lactobacillus jensenii Fannyhessea vaginae Ureaplasma parvum	U23a	1.78
5	Lactobacillus gasseri Prevotella timonensis Dialister propionicifaciens Campylobacter ureolyticus	U7a, U29a	1.70 ± 1.13
6	Ralstonia mannitolilytica Streptococcus agalactiae Kocuria spp.	U3b	2.12
7	Lactobacillus crispatus Corynebacterium spp. Corynebacterium tuberculostearicum Peptoniphilus spp.	U4b, U9a, U19a, U10a, U24a	1.86 ± 0.85

^aShared species within a structure type are presented in order of decreasing RA (RA, >1%, only top 5 shown).