<prompt> Fulminant hepatitis is commonest withHAVHBVHCVHDV Superinfection  <response>: In HDV, Fulminant viral hepatitis is 5-20; HEV: 1-2; HBV: 0.1-1; HCV: 0.1; HAV: 0.1Reference: Harrison;s Principles of Internal Medicine; 19th edition; Chapter 360; Acute Viral Hepatitis 