Table 2.

microorganism percentage detected at CE biopsies

Authors and years	Analysis method	Microorganisms detected in CE endometrium
Cicinelli 2008	Hysteroscopic and histologic exam, microorganism cultures.	Streptococci 27,9% Intestinal flora (Enterococcus faecalis and Escherichia coli) 2.5% Ureaplasma urealyticum 10% Chlamydia 2.5% Staphylococci Neisseria gonorrhoeae 0%
Cicinelli 2009	Microorganism cultures, PCR	Streptococci 28,7% Intestinal flora (Escherichia coli, Enterococcus faecalis) 26,6% Ureaplasma urealyticum 11% Chlamydia trachomatis 2,8% Staphylococci 4%
Moreno 2018	PCR	Streptococci 47% Enterococcus faecalis 15% Escherichia coli 12% Gardnerella vaginalis 7% Staphylococci 3% Mycoplasma hominis 2% Chlamydia 0% Neisseria gonorrhoeae 0%
Liu 2019	PCR	(vs non-CE endometrium) Lactobacilli ↓ Atopobium ↑ Bifidobacterium ↑ Gardnerella ↑ Prevotella ↑ Stenotrophomonas ↑ Others ↑