Hepatitis D virus infection requires concomitant infection with which virus?

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Multiple Choice

Hepatitis D virus infection requires concomitant infection with which virus?

Explanation:
Hepatitis D is a defective RNA virus that cannot form its own outer envelope. It relies on the hepatitis B virus to provide the surface antigen (HBsAg) that it uses to assemble infectious virions and enter liver cells. Because of this dependency, HDV can only infect people who have Hepatitis B infection, either at the same time or as a superinfection on chronic HBV. Vaccination against HBV or clearance of HBV protects against HDV, since without HBV there’s no envelope for HDV to use. Hepatitis A or C do not supply this envelope, and HDV is not able to act independently.

Hepatitis D is a defective RNA virus that cannot form its own outer envelope. It relies on the hepatitis B virus to provide the surface antigen (HBsAg) that it uses to assemble infectious virions and enter liver cells. Because of this dependency, HDV can only infect people who have Hepatitis B infection, either at the same time or as a superinfection on chronic HBV. Vaccination against HBV or clearance of HBV protects against HDV, since without HBV there’s no envelope for HDV to use. Hepatitis A or C do not supply this envelope, and HDV is not able to act independently.

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