If you're pregnant and have rubella, you can pass it to your baby.

Rubella infection in pregnant women can cause severe birth defects in the baby. The conditions that result from a mother being infected with rubella during pregnancy are together known as congenital rubella syndrome, or CRS.

Who is at risk?

CRS affects developing babies. A mother infected during the first 12 weeks of pregnancy (first trimester) has the highest risk of having a baby with CRS.

Conditions of congenital rubella syndrome

Many different conditions can affect developing babies if the mother is infected with rubella virus, including:   

  • Deafness
  • Vision problems
  • Heart problems
  • Low birth weight
  • Organ damage
  • Intellectual disabilities
  • Miscarriage

Prevention

  • Rubella can be prevented with the MMR vaccine.
  • Check with your doctor to make sure you are vaccinated before you get pregnant.
  • You should not get the MMR vaccine if you are pregnant because the vaccine contains weakened live virus.

More information: Pregnancy and Rubella (CDC)     

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This page was last modified on 11/02/2025