Immunization against hepatitis B also protects against which of the following infection?

hepatitis A

hepatitis C

hepatitis E

hepatitis D

none of these

Explanation

Immunization against hepatitis B also protects against hepatitis D (HDV) infection.

Hepatitis D virus can only infect individuals who are already infected with hepatitis B.

Therefore, vaccination against hepatitis B also prevents hepatitis D infection, as the hepatitis B surface antigen is necessary for the HDV to replicate.