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Which hepatitis virus requires another virus in order to spread?

  • A.Hepatitis E
  • B.Hepatitis D
  • C.Hepatitis A
  • D.Hepatitis B

Answer: B

Correct answer: Hepatitis D

The delta agent carries its own genome and antigen but no envelope gene, so it can be packaged and released only in a cell also making hepatitis B surface antigen. It therefore occurs only as a coinfection with B or as a superinfection of a chronic carrier, the latter carrying the worse prognosis.

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