CMV and hearing loss

Information on Cytomegalovirus (CMV)

Cytomegalovirus, or CMV, is the most common infectious cause of birth defects in the United States. About 1 out of 200 babies is born with congenital CMV.

There are simple and effective prevention measures you and your loved ones can take to lessen the risk of CMV transmission during pregnancy. If you are pregnant or planning to become pregnant, talk with your doctor about CMV.

One out of 5 babies with congenital CMV will have symptoms or long-term health problems, such as hearing loss. Hearing loss may progress from mild to severe during the first two years of life, which is a critical period for language learning. Over time, hearing loss can affect your child’s ability to develop communication, language, and social skills Learn more from CDC at

Additional resources