Is Vulvovaginal Candidiasis Sexually Transmitted?
No, vulvovaginal candidiasis is not a sexually transmitted infection, and sexual partners do not require routine treatment in otherwise healthy women with uncomplicated episodes. 1, 2
Why VVC Is Not Considered an STI
Vulvovaginal candidiasis has been explicitly excluded from the classification of sexually transmitted diseases by public health authorities, despite being the second most common vaginal infection in North America. 3
The condition results from overgrowth of Candida species (most commonly C. albicans) that are part of normal vaginal flora in 10–20% of asymptomatic women, rather than from sexual transmission. 4, 1
The CDC 2021 STI Treatment Guidelines address VVC within their framework purely for convenience and completeness, not because it meets criteria for sexual transmission. 4
Partner Management Recommendations
Male sexual partners should NOT be treated routinely because:
Partner treatment does not reduce recurrence rates in women with VVC. 1, 2
There is no evidence that treating partners improves outcomes or prevents future episodes. 1, 2
The only exception is when a male partner presents with symptomatic balanitis (erythema and pruritus of the glans penis), in which case topical antifungal therapy is appropriate for his symptoms. 1, 2
Common Clinical Pitfall
A critical mistake is assuming that because VVC can cause dyspareunia or that symptoms may temporarily worsen after intercourse, the infection must be sexually transmitted. In reality, sexual activity can mechanically irritate already-inflamed vulvovaginal tissues, but it does not transmit the causative organism. 4
When to Reconsider the Diagnosis
If a patient presents with recurrent "yeast infections" that consistently occur after sexual contact with new or multiple partners, consider alternative diagnoses:
Obtain testing for true STIs including Trichomonas vaginalis, bacterial vaginosis, herpes simplex virus, and other sexually transmitted pathogens. 1, 5
Vaginal pH > 4.5 suggests bacterial vaginosis or trichomoniasis rather than VVC. 1, 5
VVC can occur concurrently with sexually transmitted infections, so maintain appropriate clinical suspicion and testing when the clinical picture is atypical. 1