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Infectious mononucleosis virus

Infectious mononucleosis, or “mono”, is an infection caused by the Epstein-Barr virus. While there are other illnesses falling under the broad classification of infectious mononucleosis that can cause similar symptoms (cytomegalovirus [CMV] infection is one example) and an increase in blood lymphocytes, the form caused by the EBV is by far the most common.
Mononucleosis usually isn’t very serious. Most adults have been exposed to the Epstein-Barr virus and have built up antibodies. They’re immune and won’t get mononucleosis again.
The mono test is primarily ordered when an adolescent has symptoms that the doctor suspects are due to infectious mononucleosis.
Mono is spread through kissing, coughing, sneezing, or any contact with the saliva of someone who has been infected with the virus.

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