Streptococcus mitis vulvovaginal infections

Isolated from the human oral cavity (mouth) and human vagina
May be commensal and benign in the mouth, not normally found in the vagina but linked with oral sex, passing bacteria from mouth to vagina
May cause dental caries, bacterial infective endocarditis, bacteremia, meningitis, eye infections, and pneumonia
One case study of Streptococcus mitis transferred to the vagina and amniotic sac via oral sex by someone with known periodontal disease¹
If you have a sexual partner with bad breath or known gum disease, they should go to the dentist and improve their oral health before oral sex is on the table with you as the recipient, but keep in mind if you have bad breath, you may have a mouth infection that can then be passed on
May be a cause of preterm labour, intrauterine fetal demise, neonatal sepsis, and meningitis
S. mitis is a member of viridans group streptococci
Uses a variety of strategies to effectively colonise the human oropharynx, including modulating host immune system and expressing adhesins, immunoglobulin A proteases and toxins
Opportunistic

References

1.
Hosseini BS, Hunt J. Streptococcus mitis Chorioamnionitis after Dental Scaling and Oral Sex. Takeuchi K, ed. Case Reports in Obstetrics and Gynecology. Published online November 2, 2020:1-3. doi:10.1155/2020/9251731

Condition type	Bacteria
Affected systems	Reproductive, Cardiovascular
Sexually Transmissible
Genitourinary Incidence
Age group affected

Anaerobe / Aerobe	Aerobe
Gram stain	Gram-positive
Best tests to detect	PCR DNA NGS
Pathogen of	Mouth Nose Vagina
Commensal of (Can naturally inhabit, but not necessarily as a healthy addition)	Mouth
Optimal growth pH
Conditions correlated with	Bacterial vaginosis (BV) General human infection Preterm Birth Sexually transmitted infection (STI) Vaginal dysbiosis
Cellular adherence capacities
Found in healthy vaginas	Possibly
Biofilm-forming capacities
Cellular Morphology
Microbe Motility
Colony Colour
Substances Produced
Sexually Transmissible

Treatments for Streptococcus mitis vulvovaginal infections are only for practitioners and people who purchased the book Killing BV and Killing BV for men.