Cytomegalovirus (CMV) is a virus found throughout the world that infects between 50 to 80 percent of all adults in the United States by the age of 40. CMV is in the same family of viruses that causes cold sores (herpes simplex virus), infectious mononucleosis (Epstein-Barr virus), and chickenpox/shingles (varicella zoster virus). Most people who acquire CVM as children or adults display no signs of illness or have mild symptoms such as fever, fatigue, or tender lymph nodes. People with a compromised immune system may have more severe forms of infection involving the nervous system.
A hallmark of CMV infection is that the virus cycles through periods of dormancy and active infection during the life of the individual Infected persons of any age periodically shed the virus in their body fluids, such as saliva, urine, blood, tears, semen, or breast milk. CMV is most commonly transmitted when infected body fluids come in contact with the mucous membranes of an uninfected person, but the virus can also pass from mother to fetus during pregnancy.
Since the virus remains in the person for life, there is no treatment to eliminate CMV infection. However, minimizing contact with infected body fluids can decrease the risk of viral transmission between individuals or from mother to fetus. Contact can be minimized by using gloves or other protective barriers when handling body fluids or contaminated materials (such as diapers or tissues), avoiding shared dishes, utensils, and other personal items, and consistent and thorough hand-washing.
Antiviral drugs (ganciclovir and others)can be used to prevent or control the symptoms of CMV infection in immunocompromised individuals or some infants with congenital infection. CMV immunoglobulin may also be used in some patients. Vaccines are in the development and human clinical trial stages, which shows that vaccines may help prevent initial CMV infection or decrease the severity of symptoms.
For most people CMV infection is not a problem. However, two groups of people are at high risk of neurological or other severe symptoms that may lead to long-term effects:
The National Institute of Neurological Disorders and Stroke (NINDS), and other institutes of the National Institutes of Health (NIH), conduct research related to CMV infection in laboratories at the NIH, and support additional research through grants to major medical institutions across the country. Much of this research focuses on finding better ways to prevent and treat CMV infection in people at risk of severe neurological consequences, especially a safe and effective CMV vaccine.
National Organization for Rare Disorders (NORD)
55 Kenosia Avenue
Danbury, CT 06810
Tel: 203-744-0100 Voice Mail 800-999-NORD (6673)
NIAID Office of Communications and Government Relations
National Institutes of Health, DHHS
5601 Fishers Lane, MSC 9806
Bethesda, MD 20892
March of Dimes
1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: 914-997-4488 888-MODIMES (663-4637)
Centers for Disease Control and
U.S. Department of Health and Human Services
1600 Clifton Road
Atlanta, GA 30333
Tel: 800-311-3435 404-639-3311/404-639-3543
Office of Communications and Public Liaison
National Institute of Neurological Disorders and Stroke
National Institutes of Health
Bethesda, MD 20892
NINDS health-related material is provided for information purposes only and does not necessarily represent endorsement by or an official position of the National Institute of Neurological Disorders and Stroke or any other Federal agency. Advice on the treatment or care of an individual patient should be obtained through consultation with a physician who has examined that patient or is familiar with that patient's medical history.
All NINDS-prepared information is in the public domain and may be freely copied. Credit to the NINDS or the NIH is appreciated.
Last Modified September 16, 2011