Does vaginitis affect a pregnant woman & her infant?

Some types of vaginitis can cause problems during pregnancy.

Pregnant women with bacterial vaginosis (BV) are more likely to go into labor and give birth too early (preterm). Preterm infants may face a number of health challenges, including low birth weight and breathing problems. However, treating BV in women who are pregnant has not been consistently found to reduce rates of preterm birth. For this reason, most pregnant women without symptoms are not screened for BV. Evidence does not support routine screening for BV in asymptomatic pregnant women at high risk for preterm delivery.1 NICHD scientists are trying to clarify the link between BV and pregnancy problems to help prevent them.

Sexually transmitted types of vaginitis can be very harmful to a pregnant woman and her unborn child. Trichomoniasis can cause preterm labor and preterm birth. Some sexually transmitted infections can be passed from a mother to her infant before, during, or after birth. A pregnant woman should tell her doctor about symptoms of vaginitis. She also should get routine prenatal care, including screening tests for sexually transmitted infections.2


  1. Centers for Disease Control and Prevention. (2015). Sexually transmitted diseases treatment guidelines, 2015. Retrieved May 04, 2018, from
  2. Centers for Disease Control and Prevention. (2011). STDs & pregnancy—CDC fact sheet. Retrieved March 28, 2012, from
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