*Gardnerella vaginalis* is the only species in the genus *Gardnerella*. This bacterium is classified as gram-variable because its small coccobacilli yield inconsistent Gram stain results. Based on its genome, *G. vaginalis* belongs to the high G+C gram-positive group. While it can be a normal part of the vaginal microbiota, its overgrowth causes bacterial vaginosis, which typically presents with mild or undetectable symptoms but can cause pregnancy complications.

*Gardnerella vaginalis*

Bacterial vaginosis is an imbalance in the vaginal microbiota. There is no inflammation of the vagina in bacterial vaginosis.

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- Bacterial vaginosis
- Gonorrhea
- Chlamydia
- Syphilis
- Chancroid

Bacterial Infections of the Reproductive System

https://openstax.org/details/books/microbiology/

Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.

Microbiology is produced through a collaborative publishing agreement between OpenStax and the American Society for Microbiology Press. The book aligns with the curriculum guidelines of the American Society for Microbiology.

OpenStax Microbiology Textbook

Bacterial vaginosis

Gonorrhea is a sexually transmitted disease that is very common in individuals aged 15 to 24. 

Gonorrhea

Chlamydia is a sexually transmitted disease. It is associated with risks for multiple diseases like cervical cancer.

Chlamydia (Sexually transmitted infection)

Syphilis is a sexually transmitted infection caused by the spirochete subspecies *Treponema pallidum pallidum*. In the United States, it is the third most prevalent bacterial sexually transmitted infection, following chlamydia and gonorrhea.

Syphilis

Chancroid is a sexually transmitted disease that causes painful sores. 

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