EBV is a virus which lives inside of the body for life once a person acquires it. Reactivation of the virus is usually subclinical and there are no symptoms. A mild case of mono may be mistaken as a cold or the flu. Symptoms typically last between 2-3 weeks. Once in the body, EBV exists in the secretions of the nose and mouth.
Transmission occurs through direct and occasionally indirect contact with an infected person.
From the time of transmission, it takes 4- 6 weeks for symptoms to appear. Roommates and close friends of someone infected with EBV seldom get the virus unless the above activities occur. Diagnosis Laboratory tests are required to confirm an infectious mononucleosis diagnosis. Monoscreen - tests for presence of infectious mononucleosis antibodies in blood serum. Sometimes symptoms, signs and blood count may indicate mono even though a positive monoscreen never appears.