Mononucleosis 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 infection without actual contact, or can be caused by a microorganism. All species of animals are afflicted with infections caused by a wide variety of organisms, from submicroscopic viruses to wormlike parasites. …showed first 75 words of 635 total…

…showed last 75 words of 635 total…when the liver or nervous system is affected. A relapse occurs uncommonly, and second attacks are probably very rare. Recovery may take several months. The disease known as Chronic Fatigue Syndrome, or 'yuppie disease ' resembles mono. For a while the Chronic Fatigue Syndrome was suspected of also being caused by EBV, but this theory has been discounted. Still no cure or therapy has been found to help us with the infectious disease called mononucleosis.