HEPATITIS
D VIRUS (HDV)
Hepatitis
D (delta agent) occurs in some cases of hepatitis B. Be-cause the virus
requires hepatitis B surface antigen for its replica-tion, only individuals
with hepatitis B are at risk for hepatitis D. Anti-delta antibodies in the
presence of HBAg on testing confirm the diagnosis. It is also common among
IV/injection drug users, hemodialysis patients, and recipients of multiple
blood transfu-sions. Sexual contact with those with hepatitis B is considered
to be an important mode of transmission of hepatitis B and D. The incubation
period varies between 21 and 140 days (Bacon & Di Bisceglie, 2000).
The
symptoms of hepatitis D are similar to those of hepatitis B, except that
patients are more likely to develop fulminant hepati-tis and to progress to
chronic active hepatitis and cirrhosis. Treat-ment is similar to that of other
forms of hepatitis; interferon as a specific treatment for hepatitis D is under
investigation.
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