Hepatitis D is caused by a defective RNA virus (delta agent) that can replicate only in the presence of hepatitis B virus. Hepatitis B infection rarely occurs as coinfection during acute hepatitis B or as superinfection during chronic hepatitis, also type B.

Can we tell if we are getting sick by reading DNA?
Analyzing DNA for genetic traces associated with the risk of certain diseases. For some it is a good way to prevent the onset of disease, but the scientific community views