What is the prevalence of vaginitis?

Updated: Dec 04, 2018
  • Author: Hetal B Gor, MD, FACOG; Chief Editor: Michel E Rivlin, MD  more...
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Answer

Vaginitis is common in adult women and uncommon in prepubertal girls. Bacterial vaginosis accounts for 40-50% of vaginitis cases; vaginal candidiasis, 20-25%; and trichomoniasis, 15-20%.

In US women of childbearing age, bacterial vaginosis is the most common vaginal infection. An estimated 7.4 million new cases of bacterial vaginosis occur each year. [3] National data show that the prevalence is 29%. However, the rate varies in different subpopulations: it is 5-25% in college students and 12-61% in patients with STDs. [3] In the United States, as many as 16% of pregnant women have bacterial vaginosis. [3] A 50-60% prevalence is found in female prison inmates and commercial sex workers.

Eighty-five percent of those with bacterial vaginosis are asymptomatic. More than a billion dollars is estimated to be spent annually on both self-treatment and visits to a medical provider.

An estimated 3 million cases of trichomoniasis occur each year in the United States. [4] The worldwide prevalence of trichomoniasis is 174 million; these cases account for 10-25% of all vaginal infections. [3]


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