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Cytomegalovirus (CMV) is a virus belonging to the herpes family. The disease occurs worldwide and is transmitted by human contact. About 80-85% of people over age 35 have been infected with cytomegalovirus, usually during childhood or early adulthood. In most of these people, the disease is so mild that it's overlooked. However, CMV infection during pregnancy can be hazardous to the fetus, possibly leading to stillbirth, brain damage, other birth defects, or neonatal illness.
Causes & Development; Risk Factors
Cytomegalovirus has been found in the saliva, respiratory droplets, urine, semen, breast milk, feces, blood (transfusions), and vaginal and cervical secretions of infected persons. Transmission usually takes place through contact with these infected secretions, which harbor the virus for months or even years.
Cytomegalovirus is probably spread through the body in lymphocytes or mononuclear cells to the lungs, liver, and central nervous system where it often produces inflammatory reactions.
Immunodeficient patients (AIDS patients or who have those who have received transplanted organs), are at high risk of contracting CMV infection. Recipients of blood transfusions from donors with positive CMV antibodies are at some risk.
Signs & Symptoms
As with EBV, CMV is frequently symptomless.
Treatment & Prevention
There is no specific treatment available; antiviral medications do not help. Relief of symptoms is provided with analgesics, and warm salt water gargles for sore throat.
Prognosis; Complications
In most patients, the disease usually runs a benign, self-limiting course. Most patients recover within 4 to 6 weeks without medication. Fever usually resolves in around 10 days, and swollen lymph glands and spleen return to normal in 4 weeks. Fatigue may linger for 2 to 3 months.
As with EBV, mono most often results when CMV infection occurs in the teens and 20s. Immunodeficient patients and those receiving immunosuppressives may develop pneumonia or other secondary infections. Other possible complications include secondary throat infection, rupture of spleen (rare) and neurologic complications (rare).
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Conditions that suggest Infectious Mononucleosis (CMV):
Infectious Mononucleosis (CMV) could instead be: | | | | | Infections |  Infectious Mononucleosis - Mono | Mononucleosis-like disease may be caused by the cytomegalovirus (CMV) as well as the classic mononucleosis of the Epstein-Barr virus (EBV). Both viruses are members of the herpes virus family. Mononucleosis caused by EBV is the most frequently encountered type and is responsible for approximately 85% of infectious mononucleosis cases. Sore throat is less common in people who have CMV mono than in those infected with EBV. |
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Recommendations and treatments for Infectious Mononucleosis (CMV):
KEY | | Strong or generally accepted link |  | | Proven definite or direct link |  | | May do some good |  | | Likely to help |  | | Highly recommended |
GLOSSARY
AIDS
Acquired Immune Deficiency Syndrome. An immune system deficiency disorder that suddenly alters the body's ability to defend itself. The AIDS virus invades the T4 helper/inducer lymphocytes and multiplies, causing a breakdown in the body's immune system, eventually leading to overwhelming infection and/or cancer, with ultimate death.
Antibody (Antibodies)
A type of serum protein (globulin) synthesized by white blood cells of the lymphoid type in response to an antigenic (foreign substance) stimulus. Antibodies are complex substances formed to neutralize or destroy these antigens in the blood. Antibody activity normally fights infection but can be damaging in allergies and a group of diseases that are called autoimmune diseases.
Antiviral
Any of a number of herbs, drugs or agents capable of destroying viruses or inhibiting their growth or multiplication until the body is capable of destroying the virus itself. Most antiviral agents are members of the antimetabolite family.
Benign
Literally: innocent; not malignant. Often used to refer to cells that are not cancerous; they tend to grow slowly and don't spread (metastasize) like cancer tumors do.
Central Nervous System (CNS)
A collective term for the brain, spinal cord, their nerves, and the sensory end organs. More broadly, this can even include the
neurotransmitting hormones instigated by the CNS that control the chemical nervous system, the endocrine glands.
Cytomegalovirus (CMV)
A member of the herpes virus family which may induce the immune-deficient state or cause active illness, such as pneumonia, in a patient already immune-deficient due to chronic illness, such as cancer or organ transplantation therapy.
Epstein Barr Virus (EBV, Epstein-Barr Virus)
A virus that causes infectious mononucleosis and that is possibly capable of causing other diseases in immunocompromised hosts.
Herpes
A small group of capsid-forming DNA viruses, sometimes divided into Type I (forming vesicles and blisters on the mouth, lips-generally above the waist) and Type II (usually sexually-transmitted, with symptoms mostly below the waist). Both types form acute initial outbreaks, go dormant, reactivate, and so forth. For most folks, frequent outbreaks are clear signs of stress or immunosuppression. Both types are equally dangerous for infants.
Liver (Hepatic)
The largest and one of the most complex organs of the body, the liver is responsible for much of the metabolism of fats, proteins and carbohydrates. It is the site of much of the body's detoxification. It is connected very closely with digestion and the regulation of blood sugar, among many other functions. Found behind the ribs on the right side of the abdomen, it has many important functions such as removing harmful material from the blood, making enzymes and bile that help digest food, and converting food into substances needed for life and growth. Hepatic: Pertaining to the liver.
Lung (Lungs, Pulmonary)
Organ of the body, located in the chest cavity which is designed to bring oxygen from the air into the blood stream, while also expelling carbon dioxide and other waste gases out of the body. Pulmonary: Related to the lungs.
Lymph Nodes (Axillary Nodes, Inguinal Nodes, Lymph Gland, Lymph Glands, Lymph Node, Lymphatic)
Small, bean-shaped nodes at various points throughout the body that function to filter the lymph fluid and attempt to destroy the microorganisms and abnormal cells which collect there. The most common locations are the neck (both sides and front), armpit (axillary) and groin (inguinal), but also under the jaw and behind the ears. Swollen or painful lymph nodes generally result from localized or systemic infection, abscess formation, or malignancy. Other causes of enlarged lymph nodes are extremely rare. Physical examination for lymph nodes includes pressing on them to check for size, texture, warmth, tenderness and mobility. Most lymph nodes can not be felt until they become swollen, and then will only be tender when pressed or massaged. A lymph node that is painful even without touching indicates greater swelling. Lymph nodes can usually be distinguished from other growths because they generally feel small, smooth, round or oval-shaped and somewhat mobile when attempts are made to push them sideways. Because less fat covers the lymph nodes in children, they are easier to feel, even when they are not busy filtering germs or making antibodies. Childrens' nodes enlarge faster, get bigger in response to an infection and stay swollen longer than an adult's. Also known (incorrectly) as lymph glands.
Mononucleosis
Infectious Mononucleosis: An acute, infectious disease caused by the herpes virus or Epstein-Barr virus, with fever and inflamed swelling of the lymph nodes around the neck, under the arms, and in the groin. The general symptoms are fever,
sore throat, exhaustion, and abnormal white blood cells.
Neonatal (Neonate)
A term that refers to newborn infants, particularly during the first four weeks of life.
Spleen (Splenectomy)
The largest organ of the lymphatic system in the body, located between the stomach and the diaphragm (the muscle below the lungs which provides the motion for breathing). It destroys old red blood cells, produces lymphocytes and plasma cells, and stores blood. It also has other as yet unknown functions. A splenectomy is the surgical removal of the spleen.
Virus (Viri, Viruses)
Any of a vast group of minute structures composed of a protein coat and a core of DNA and/or RNA that reproduces in the cells of the infected host. Capable of infecting all animals and plants, causing devastating disease in immunocompromised individuals. Viruses are not affected by antibiotics, and are completely dependent upon the cells of the infected host for the ability to reproduce.
Last updated: Nov 14, 2009
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