BVNasopharynx cancerBurkitt's lymphomaHodgkin's lymphomaFollicular dendritic cell sarcomaExtranodal NK/T-cell lymphoma, nasal typeMCPyVMerkel-cell carcinomaRNA virusHCVHepatocellular carcinomaSplenic marginal zone lymphomaHTLV-IAdult T-cell leukemia/lymphomaImmune disordersHIVAIDSCentral nervous systemEncephalitis/meningitisDNA virusJCVProgressive multifocal leukoencephalopathyRNA virusMeVSubacute sclerosing panencephalitisLCVLymphocytic choriomeningitisArbovirus encephalitisOrthomyxoviridae (probable)Encephalitis lethargicaRVRabiesChandipura virusHerpesviral meningitisRamsay Hunt syndrome type 2MyelitisPoliovirusPoliomyelitisPost-polio syndromeHTLV-ITropical spastic paraparesisEyeCytomegalovirusCytomegalovirus retinitisHSVHerpes of the eyeCardiovascularCBVPericarditisMyocarditisRespiratory system/acute viral nasopharyngitis/viral pneumoniaDNA virusEpstein–Barr virusEBV infection/Infectious mononucleosisCytomegalovirusRNA virusIV: S