<prompt> Co-infection is essential for disease presentation isHepatitis AHepatitis BNon A Non B HepatitisDelta Hepatitis  <response>: majority of patients with HDV superinfection evolve to chronic HDV infection and hepatitis. Two major patterns of infection have been described: coinfection with HBV and HDV, or superinfection with HDV of a person chronically infected with HBV Ref Harrison20th edition pg 980 