Herpesvirus ubique.
D000328:Adult; D002051:Burkitt Lymphoma / Q000209:etiology; D002675:Child, Preschool; D006564:Herpesviridae; D004854:Herpesvirus 4, Human; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007244:Infectious Mononucleosis / Q000209:etiology; D009303:Nasopharyngeal Neoplasms / Q000209:etiology