A viral disease called mono, also known as infectious mononucleosis, is frequently brought on by the Epstein-Barr virus (EBV). Because of its link to viral transmission by saliva, it's commonly referred to as the "kissing disease". Despite its prevalence in youth and young adults, mono can afflict individuals of any age. Important Points: Agent of Causation: The Epstein-Barr virus (EBV), which belongs to the herpesvirus family, is the main cause of mono. The cytomegalovirus (CMV) and other viruses can also produce symptoms resembling these. Transfer: Because the virus is usually spread by salivary contact, kissing is associated with it. Other respiratory secretions are another way that it might spread. Typical Symptoms: Severe weariness, sore throat, enlarged lymph nodes, and fever are typical signs of mono. In addition, headaches, aches in the muscles, and an enlarged spleen are possible symptoms of mono. Time of Incubation: Mono typically takes four to six weeks to incubate, during which time an infected individual may not show any symptoms but is still able to spread the virus to other people. A physical examination, laboratory testing, and symptoms are frequently used to make a diagnosis. Certain antibodies and a higher concentration of white blood cells may be detected by blood testing.