Herpes virus type 4 is generally not serious. Epstein-Barr virus (EBV) is a widely spread herpesvirus (human herpesvirus type 4) transmitted by close contact between susceptible individuals and asymptomatic EBV exporters, and most primary EBV infections worldwide are subclinical, latent infections. EBV is the main agent of infectious mononucleosis, and its infection persists asymptomatically throughout life in most adults but can cause B-cell lymphoma, T-cell lymphoma, Hodgkin’s lymphoma, and nasopharyngeal carcinoma (NPC) in some patients. Disease reactivation is not a prominent problem with EBV relative to the other major herpesviruses, but it has been associated with aggressive lymphoproliferative disorders in transplant recipients. If you are infected with EBV, you can visit a hospital and have regular reviews.