Vaginal Candidiasis Is NOT a Sexually Transmitted Infection
Vulvovaginal candidiasis is not sexually transmitted, and routine treatment of sexual partners is not recommended because it does not reduce recurrence rates or improve clinical outcomes. 1, 2
Why VVC Is Not an STI
Candida species are normal vaginal commensals present in 10–20% of asymptomatic women without causing infection, representing normal flora rather than a pathogen acquired through sexual contact. 1, 2
VVC results from overgrowth of endogenous yeast triggered by disruption of the vaginal ecosystem (antibiotics, hormonal changes, diabetes, immunosuppression), not from transmission between partners. 3, 4
Multiple randomized controlled trials confirm that treating male sexual partners does not prevent recurrence in women with VVC or recurrent VVC, establishing that partner therapy provides no clinical benefit. 2, 5
The CDC explicitly excludes VVC from the category of sexually transmitted diseases in its STI treatment guidelines, distinguishing it from infections like trichomoniasis, gonorrhea, and chlamydia that require partner notification and treatment. 1, 3
When Partner Treatment IS Indicated (The Only Exception)
Treat a male sexual partner only if he exhibits symptomatic balanitis—erythema, pruritus, or irritation of the glans penis—using a topical antifungal agent for his own symptomatic relief. 2, 6
Asymptomatic male partners should never be treated, even in cases of recurrent VVC, because colonization without symptoms does not contribute to reinfection. 2
Common Clinical Pitfalls to Avoid
Do not reflexively recommend partner treatment when a woman presents with VVC or recurrent VVC; this wastes resources and perpetuates the misconception that VVC is sexually transmitted. 2, 5
Do not confuse VVC with trichomoniasis, which IS sexually transmitted and requires simultaneous treatment of both partners with metronidazole 2 g orally as a single dose to prevent reinfection. 6, 5
Maintain appropriate clinical suspicion for concurrent STIs when evaluating vaginal symptoms, because VVC can coexist with gonorrhea, chlamydia, or trichomoniasis; test for STIs when clinically indicated based on sexual history and risk factors. 2, 6
Patient Counseling Points
Reassure patients that VVC is not a reflection of sexual behavior or hygiene practices and does not indicate infidelity or exposure to an STI. 3
Explain that recurrent VVC (≥3 episodes per year) is usually due to host factors—genetic predisposition, hormonal fluctuations, antibiotic use, or immunosuppression—rather than reinfection from a partner. 7, 4, 8
Advise that sexual activity may temporarily worsen vulvar irritation during an active infection due to mechanical trauma, but intercourse does not cause or transmit the infection. 1