Viral mononucleosis - Definition

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Viral or infectious mononucleosis is a contagious disease caused in the majority of cases by the Epstein-Barr virus. This is a contagious pathology, notably spread by saliva, hence its nickname the "kissing disease". Principal symptoms are severe fatigue, sore throat with inflamed tonsils, fever, noted presence of lymph nodes, and sometimes swelling of the spleen. Blood samples indicate an increased lymphocyte and monocyte count, and diagnosis is confirmed by serology test. The disease generally evolves over several weeks and rest is essential for the patient.