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is an infectious disease of humans in which the blood and tissues contain mononuclear leukocytes (white blood cells with only one nucleus), either monocytes or lymphocytes. An infectious disease is a disease that can give you an infection, can be transmitted by ....

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.... that enable them to enter cells. Viruses are unable to multiple outside of cells. Mono is found in the DNA in the body. Another name for mononucleosis is glandular fever because of the fever and swelling of the lymph nodes throughout the body. What causes mononucleosis is the Epstein-Barr virus (EBV), which is like herpes. The herpes virus also causes some cases of mono and other diseases. Mono usually occurs in adults 15 to 30 years old, but is known to appear at any age. Mono symptoms include fever, chills, fatigue, malaise, sore throat, head-aches, swelling of the lymph nodes (noticeable in the neck), and skin rashes. Liver inflammation ....