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How many people are affected by or at risk for bacterial vaginosis (BV)?

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The exact number of women affected by or at risk for BV is not known. The most recent estimates from the U.S. Preventive Services Task Force suggest that 9% to 23% of women of reproductive age may be affected by BV.1

The Centers for Disease Control and Prevention estimates that more than 1 million pregnant women develop BV every year.2

Among pregnant women, those who are at increased risk for BV include1:

  • African-American women
  • Women of low socioeconomic status
  • Women who have previously delivered an infant with a low birth weight

  1. U.S. Preventive Services Task Force. (2008). Screening for bacterial vaginosis in pregnancy to prevent preterm delivery: U.S. Preventive Services Task Force recommendation statement (AHRQ Publication No. 08-05106-EF-2). Retrieved May 10, 2012, from External Web Site Policy [top]
  2. Centers for Disease Control and Prevention. (2012). STDs and pregnancy: CDC fact sheet. Retrieved May 5, 2012, from [top]

Last Reviewed: 05/21/2013
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