Here are key facts about infectious mononucleosis:
Epstein-Barr virus (EBV) is a contagious infection that causes infectious mononucleosis.The illness is spread by casual contact, usually via saliva. Mono has an incubation period of 4to6 weeks.The vast majority of adults have antibodies against EBV, meaning they have been infected with the virus and are immune to mono.Fatigue, severe sore throat, swollen lymph nodes, and fever are common symptoms of mono.Specialized blood tests are used to confirm the diagnosis of mono.Mono can be associated with an enlarged spleen and liver inflammation (hepatitis).Some people who have had mono experience reactivations and may shed virus for the rest of their lives.One should avoid contact sports during active mono illness and during recovery because of the possibility that the spleen can rupture