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CMV is a virus related to the herpes virus group of infections. Like herpes, it is inactive at times, but it is incurable and is a life-time infection. CMV is the most common congenital viral infection. It is also called congenital cytomegalovirus or cytomegalovirus inclusion disease.
CMV without symptoms is common in older babies and young children. It is found in saliva, urine, semen, and other body fluids. The virus is easily spread in households and in daycare centers. It can be transmitted to the fetus during pregnancy (called congenital CMV) and to the baby during delivery or in breast milk.
Over half of women of childbearing age are infected with CMV prior to becoming pregnant. There appear to be few risks for complications of CMV for this group, and only a few babies have the infection at birth. These babies appear to have no significant illness or abnormalities.
According to the CDC, 1% to 4% of women have primary infections with CMV during pregnancy. When a woman's first infection occurs during pregnancy, there is a higher risk that after birth the baby may have CMV-related complications. About 1 in 150 babies with congenital CMV will have signs of the infection at birth. Of these, about half will have serious complications including hearing loss, visual impairment, developmental delay, or epilepsy.
Unlike congenital CMV, transmission at time of delivery or through breast milk does not typically cause illness in the baby.
Most babies with congenital (present at birth) CMV do not have symptoms of the infection at birth. Symptoms may include:
Liver enlargement and jaundice
The symptoms of CMV may look like other conditions or medical problems. Always consult your baby's doctor for a diagnosis.
Most infections with CMV in the mother are not diagnosed because the virus produces few symptoms. A mother who has had CMV infection before may have antibodies present in her blood stream. The virus can also be cultured from the throat or urine of the mother or baby.
Research is underway to find antiviral drugs that might be effective against CMV. Other antiviral drugs and immunoglobulins may be of help in certain cases.
Although an infected person may transmit the virus at any time, proper hand-washing with soap and water is effective in removing the virus from the hands. Research is also underway to develop a vaccine to provide immunity to CMV.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.