Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Pregnant Women

Español: Mujeres embarazadas

Group of pregnant women

In the United States, about half of pregnant women have never been infected with CMV. About 1% to 4% of these women have a primary (or first) CMV infection during their pregnancy. Most people have no symptoms when they get infected with CMV, but some may have symptoms similar to mononucleosis (mono).

CMV can be transmitted from a pregnant woman to her fetus during pregnancy. The virus in the mother’s blood crosses over the placenta and infects the fetus’ blood.

Most babies with congenital (meaning present at birth) CMV infection never have health problems. But in some babies, congenital CMV infection causes health problems that may be apparent at birth or may develop later during infancy or childhood. See Congenital CMV Signs and Symptoms.

Transmission of CMV Infection

The virus is generally passed from infected people to others through direct contact with body fluids, such as urine, saliva, vaginal secretions, and semen.

Infants and children who are infected with CMV after birth may shed CMV in their urine and saliva (that is, pass virus in their urine or saliva). And these are body fluids that parents and other caregivers have frequent contact with through activities such as diaper changing, nose wiping, and feeding. Although the virus is not highly contagious, it has been shown to spread among household members.

For pregnant women, the two most common exposures to CMV are through sexual contact and through contact with the urine of young children with CMV infection.

See Transmission for more information.

Treatment for CMV Infection

For now, there are no licensed treatments for pregnant women who become infected with CMV during pregnancy. Currently licensed treatments that are effective against CMV infection have serious side effects, are not approved for use in pregnant women, and have not been shown to prevent CMV infection in the fetus. Scientists are working on CMV vaccines and are looking for other ways to prevent congenital CMV infection.

Reducing Risk of CMV Infection

There are certain steps women can take that may reduce their exposure to CMV and other infections that pose a risk during pregnancy. See Prevention.

Send an eCard to a Pregnant Friend or Family Member

Send an eCard to a pregnant friend or family member.

eCard: Pregnant? Worry less. Sleep more.

Download a Podcast

Top of Page

Images and logos on this website which are trademarked/copyrighted or used with permission of the trademark/copyright or logo holder are not in the public domain. These images and logos have been licensed for or used with permission in the materials provided on this website. The materials in the form presented on this website may be used without seeking further permission. Any other use of trademarked/copyrighted images or logos requires permission from the trademark/copyright holder...more

External Web Site Policy This graphic notice means that you are leaving an HHS Web site. For more information, please see the Exit Notification and Disclaimer policy.


CMV Awareness Month.
Contact Us:
  • Centers for Disease Control and Prevention
    1600 Clifton Rd
    Atlanta, GA 30333
  • 800-CDC-INFO
    TTY: (888) 232-6348
    Contact CDC-INFO The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Road Atlanta, GA 30329-4027, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO
A-Z Index
  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #