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CMV Infection

(Cytomegalovirus)

Pronunciation: sigh-toe-meg-a-lo-virus

Definition

Cytomegalovirus (CMV) is a common infection that has an effect on the entire body. Once infected, the virus remains in your body for the rest of your life. It is often in a sleeping state, but can be activated by stressful situations.

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The Lymphatic Organs
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Causes    TOP

CMV is caused by a type of herpes virus. The virus is passed between people through body fluids. CMV can be passed during:

  • Kissing
  • Sexual intercourse
  • Breastfeeding
  • Changing the diaper of an infected infant

Risk Factors    TOP

This virus is so common throughout the US that everyone is considered at risk for CMV. People with the highest risk of getting this virus include:

  • Children and childcare providers in day care and preschool—due to frequent exposure to bodily fluids
  • People with suppressed or impaired immune systems, including people with:

Symptoms    TOP

The virus does not cause any symptoms when it is inactive. The virus may be activated because of stressful situations, medication, illness, or reduced immunity. Symptoms of the activated virus include:

People with suppressed or impaired immune systems can also develop:

Diagnosis    TOP

CMV infection is not often diagnosed because the virus rarely produces symptoms. If CMV is suspected, the doctor may look for signs of the infection in blood or fluid samples. A biopsy may also be done on organs that are affected.

Treatment    TOP

Most people infected with CMV will not need a specific treatment. Treatment may be needed if the virus is reactivated and you have a weakened immune system.

Antiviral medications may be used for people who have an organ transplant or a suppressed immune system. These medications do not cure CMV, but can decrease the symptoms and duration of the illness.

Prevention    TOP

There is no way to prevent CMV, but there are some measures that can decrease your chance of the infection:

  • Wash your hands frequently.
  • Properly dispose of diapers.
  • Do not share glasses or eating utensils.
  • Avoiding intimate contact with people known to have the CMV infection.
  • Practice safe sex.

RESOURCES:

Centers for Disease Control and Prevention
http://www.cdc.gov
Infectious Diseases Society of America
http://www.idsociety.org

CANADIAN RESOURCES:

Public Health Agency of Canada
http://www.phac-aspc.gc.ca

References:

Cytomegalovirus. Family Doctor—American Association of Family Physicians website. Available at:
...(Click grey area to select URL)
Updated July 2013. Accessed June 10, 2015.
Cytomegalovirus (CMV) and congenital CMV infection. Centers for Disease Control and Prevention website. Available at:
...(Click grey area to select URL)
Updated July 28, 2010. Accessed June 10, 2015.
Cytomegalovirus (CMV) infection in immunocompetent patients. EBSCO DynaMed Plus website. Available at: http://www.dynamed.... Updated February 26, 2015. Accessed June 10, 2015.
Last reviewed May 2016 by David Horn, MD
Last Updated: 6/19/2014

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