Read condition-specific symptoms and clinical context for Epstein-Barr virus. One of the most common human viruses; the usual cause of mono.
CDC describes Epstein-Barr virus, also known as human herpesvirus 4, as one of the most common human viruses in the world, spread mainly through saliva. Most people are infected in their lifetime, often in childhood and without symptoms. After infection the virus becomes latent in the body and can reactivate.
CDC states that EBV infections in children usually cause no symptoms or symptoms indistinguishable from other mild childhood illnesses, while teenagers and adults who do get symptoms usually recover in 2 to 4 weeks. EBV is the most common cause of infectious mononucleosis.
Possible symptoms: Fatigue; Fever; Inflamed throat; Swollen lymph nodes in the neck; Enlarged spleen; Swollen liver; Rash.
CDC states there is no specific treatment for EBV and that diagnosis can be challenging because symptoms resemble other illnesses; a blood test that detects antibodies can confirm infection. Most people get better in 2 to 4 weeks.
Source check: 2026-09-19. Educational content; independent scientific review remains pending.