<prompt> Virus causing hepatocellular carcinoma, belongs to -HepadanvirideEnterovirusCalci virusNone  <response>: Ans. is a i.e., Hepadanviride o Among the hepatitis viruses, HBV hepadanavirus and HCV flavivirus can cause hepatocellular carcinoma.VirusHAV, 27 nm RNA Picomavirus HepatovirusHBV, 47 nm DNA HepadnavirusHCV, 30-60 nm RNA, Flavivirus HepacivirusHD V, 35-37 nm Defective RNA DeltavirusHEV, 32-34 nm RNA HerpesvirusModes of infectionFecal-oralPercutaneous, Vertical, SexualPercutaneousPercutaneousFecal-oralAge affectedChildrenAny ageAdultsAny ageYoung adultsIncubation period days154530-18015-16030-18015-60OnsetAcuteInsidiousInsidiousInsidiousAcuteIllnessMildOccasionally severeModerateOccasionally severeMild, except in pregnancyCarrier stateNilCommonPresentNil only with HBVNilOncogenicityNilPresent specially after neonatal infectionPresentNilNilPrevalenceWorldwideWorldwideProbably worldwideEndemic areas Mediterranean, N Europe, Central and N AmericaOnly developing countries India Asia. Africa Central, AmericaSpecific prophylaxisIg and Vaccineig and vaccineNilHBV vaccineNil 