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Mononucleosis: Kissing Disease
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Infectious mononucleosis (mono), or glandular fever, is often called the kissing disease. Kissing can spread the virus that causes this disease, but more commonly coughing, sneezing, or sharing a glass or cup transmits mononucleosis. It's not highly contagious.
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The virus, a member of the herpes family, is best-known as a cause of mononucleosis, the so-called "kissing disease." It ... has been linked to other ailments, including other nerve disorders and cancers, and is so common that by some estimates it has infected 95 percent of U.S. adults by age 40.
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Known as the "kissing disease", infectious mononucleosis is caused by the Epstein-Barr virus. You can only get it once in your life, but if you do get it, it can take several weeks to recover.
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Kissing Disease