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ECHO virus
Nonpolio enterovirus infection; Echovirus infection
Enteric cytopathic human orphan (ECHO) viruses are a group of viruses that can lead to infections in different parts of the body, and skin rashes.
Causes
Echovirus is one of several families of viruses that affect the gastrointestinal tract. Together, these are called enteroviruses. These infections are common. In the United States, they are most common in the summer and fall. You can catch the virus if you come into contact with stool contaminated by the virus, and possibly by breathing in air particles from an infected person.
Serious infections with ECHO viruses are much less common, but can be significant. For example, some cases of viral meningitis (inflammation of the tissue that surrounds the brain and spinal cord) is caused by an ECHO virus.
Symptoms
Symptoms depend on the site of infection and may include:
-
Croup
(breathing difficulty and harsh cough)
Croup
Croup is breathing difficulty and a "barking" cough. Croup is due to swelling around the vocal cords. It is common in infants and children....
ImageRead Article Now Book Mark Article - Mouth sores
- Skin rashes
- Sore throat
-
Chest pain if the infection affects the
heart muscle
or sac-like covering around the heart (
pericarditis
)
Heart muscle
Myocarditis is inflammation of the heart muscle. The condition is called pediatric myocarditis when it occurs in children.
ImageRead Article Now Book Mark ArticlePericarditis
Pericarditis is a condition in which the sac-like covering around the heart (pericardium) becomes inflamed.
ImageRead Article Now Book Mark Article - Severe headache, mental status changes, fever and chills, nausea and vomiting, sensitivity to light, if the infection affects the membranes covering the brain and spinal cord (meningitis)
Exams and Tests
Because the illness is often mild and has no specific treatment, testing for echovirus is often not done.
ECHO virus can be identified from:
-
Rectal culture
Rectal culture
Rectal culture is a lab test to identify bacteria and other germs in the rectum that can cause gastrointestinal symptoms and disease.
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Spinal fluid culture
Spinal fluid culture
A cerebrospinal fluid (CSF) culture is a laboratory test to look for bacteria, fungi, and viruses in the fluid that moves in the space around the spi...
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Stool culture
Stool culture
A fecal culture is a lab test to find organisms in the stool (feces) that can cause gastrointestinal symptoms and disease.
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Throat culture
Throat culture
A throat swab culture is a laboratory test that is done to identify germs that may cause infection in the throat. It is most often used to diagnose ...
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Treatment
ECHO virus infections almost always clear up on their own. No specific medicines are available to fight the virus. Immune system treatment called IVIG may help people with severe ECHO virus infections who have a weakened immune system. Antibiotics are not effective against this virus, or any other virus.
Outlook (Prognosis)
People who have the less severe types of illness should recover completely without treatment. Infections of organs such as the heart may cause severe disease and can be deadly.
Possible Complications
Complications vary with the site and type of infection. Heart infections may be deadly, while most other types of infection improve on their own.
When to Contact a Medical Professional
Call your health care provider if you have any of the symptoms listed above.
Prevention
No specific preventive measures are available for ECHO virus infections other than hand-washing, especially when you are in contact with sick people. Currently, no vaccines are available.
References
Romero JR. Enteroviruses. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine . 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 379.
Romero JR, Modlin JF. Introduction to the human enteroviruses and parechoviruses. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, Updated Edition . 8th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 172.
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ECHO virus type 9 exanthem - illustration
Many viruses cause skin rashes (exanthem). This child was diagnosed with an ECHO virus infection. (Image courtesy of the Centers for Disease Control and Prevention.)
ECHO virus type 9 exanthem
illustration
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Antibodies - illustration
Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, drugs, and foreign particles. The immune system recognizes antigens and produces antibodies that destroy substances containing antigens.
Antibodies
illustration
-
ECHO virus type 9 exanthem - illustration
Many viruses cause skin rashes (exanthem). This child was diagnosed with an ECHO virus infection. (Image courtesy of the Centers for Disease Control and Prevention.)
ECHO virus type 9 exanthem
illustration
-
Antibodies - illustration
Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, drugs, and foreign particles. The immune system recognizes antigens and produces antibodies that destroy substances containing antigens.
Antibodies
illustration
Review Date: 11/27/2016
Reviewed By: Arnold Lentnek, MD, Infectious Diseases Medical Practice of NY and Clinical Research Centers of CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
