Preventing Mother-to-Child Transmission of HIV
June 4, 2018
What Is Mother-to-Child Transmission of HIV?
Mother-to-child transmission of HIV is the spread of HIV from a woman living with HIV to her child during pregnancy, childbirth (also called labor and delivery), or breastfeeding (through breast milk). Mother-to-child transmission of HIV is also called perinatal transmission of HIV.
Can Mother-to-Child Transmission of HIV Be Prevented?
Yes. Because of the use of HIV medicines and other strategies, the risk of mother-to-child transmission can be lowered to 2% or less. The risk of mother-to-child transmission of HIV is low when:
- HIV is detected as early as possible during pregnancy (or before a woman gets pregnant).
- Women with HIV receive HIV medicines during pregnancy and childbirth and, in certain situations, have a scheduled cesarean delivery (sometimes called a C-section).
- Babies born to women with HIV receive HIV medicines for 4 to 6 weeks after birth and are not breastfed.
Is HIV Testing Recommended for Pregnant Women?
The Centers for Disease Control and Prevention (CDC) recommends that all women who are pregnant or planning to become pregnant get tested for HIV early -- before pregnancy, if possible, and during every pregnancy.
Pregnant women with HIV receive HIV medicines to reduce the risk of mother-to-child transmission of HIV and to protect their own health. HIV medicines are recommended for everyone who has HIV. HIV medicines help people with HIV live longer, healthier lives and reduce the risk of transmission of HIV.
How Do HIV Medicines Prevent Mother-to-Child Transmission of HIV?
HIV medicines work by preventing HIV from multiplying, which reduces the amount of HIV in the body (also called the viral load). Having less HIV in the body protects a woman's health and reduces her risk of passing HIV to her child during pregnancy and childbirth.
Some of the HIV medicines pass from the pregnant woman to her unborn baby across the placenta (also called the afterbirth). This transfer of HIV medicines protects the baby from HIV infection, especially during a vaginal delivery when the baby passes through the birth canal and is exposed to any HIV in the mother's blood or other fluids. In some situations, a woman with HIV may have a cesarean delivery (sometimes called a C-section) to reduce the risk of mother-to-child transmission of HIV during delivery.
Babies born to women with HIV receive HIV medicines for 4 to 6 weeks after birth. The HIV medicines reduce the risk of infection from any HIV that may have entered a baby's body during childbirth.
Are HIV Medicines Safe to Use During Pregnancy?
Most HIV medicines are safe to use during pregnancy. In general, HIV medicines don't increase the risk of birth defects. Health care providers can explain the benefits and risks of specific HIV medicines to help women with HIV decide which HIV medicines to use during pregnancy.
Are There Other Ways to Prevent Mother-to-Child Transmission of HIV?
Because HIV can be transmitted in breast milk, women with HIV in the United States should not breastfeed their babies. In the United States, baby formula is a safe and healthy alternative to breast milk.
There are reports of children becoming infected with HIV by eating food that was previously chewed by a person with HIV. To be safe, babies should not be fed pre-chewed food.
How Can I Learn More About Preventing Mother-to-Child Transmission of HIV?
Read the following AIDSinfo fact sheets:
- HIV Medicines During Pregnancy and Childbirth
- Preventing Mother-to-Child Transmission of HIV After Birth
This fact sheet is based on information from the following sources: From CDC:
From the Department of Health and Human Services:
- Recommendations for Use of Antiretroviral Drugs in Pregnant HIV-1-Infected Women for Maternal Health and Interventions to Reduce Perinatal HIV Transmission in the United States:
- General Principles Regarding Use of Antiretroviral Drugs During Pregnancy: Overview and Teratogenicity
- Management of Infants Born to Women with HIV Infection: Antiretroviral Management of Newborns with Perinatal HIV Exposure or Perinatal HIV
[Note from TheBody: This article was created by AIDSinfo, who last updated it on May 24, 2018. We have cross-posted it with their permission.]
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