<prompt> The commonest hepatotropic virus causing increased chronic carrier state isHEVHAVHBVHCV  <response>: Ans. is d i.e.,. HCV Most common hepatitis to progress to chronicity is Hepatitis G. . HCV Its major feature, however, is its propensity to cause chronic hepatitis in more than 80 of those infected Clinical and epidemiologic features of viral hepatitis Features HAV HBV HCV HDV HEV Incubation days 15-45 30-180 15-160 30-180 14-60 Age Children, young Adults Young adults Any age but more in adult Any age Young adults Transmission Fecal-oral -- -- -- Percutaneous unusual -- Perinatal -- -- Sexual -- Clinical Severity Mild Occasionally Severe Moderate Occasionally Severe Mild Fulminant l .1- 1 .1 5-20 1-2 Progression to chronicity None Occasional 1-10 Common 50-70 Common None Carrier None. 1-30 1.5-3.2 Variable None Prognosis Excellent Worse with age Moderate Acute, good chronic poor Good 