Mononucleosis epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Epidemiology and Demographics
Mononucleosis is typically transmitted from asymptomatic individuals through blood or saliva (hence "the kissing disease"), or by sharing a drink, or sharing eating utensils. The disease is far less contagious than is commonly thought. In rare cases a person may have a high resistance to infection.
The disease is so-named because the count of mononuclear leucocytes (white blood cells with a one-lobed nucleus) rises significantly. There are two main types of mononuclear leucocytes: monocytes and lymphocytes. They normally account for about 35% of all white blood cells. With infectious mononucleosis, this can rise to 50-70%. Also, the total white blood count may increase to 10,000-20,000 per cubic millimeter.