Hepatitis >>> Types D, E, F, and G


Ruler's of Penmai
Jul 5, 2011
The most important of these at present is the hepatitis D virus (HDV), also known as the delta virus or agent. It is a small virus that requires concomitant infection with hepatitis B to survive. HDV cannot survive on its own because it requires a protein that the hepatitis B virus makes (the envelope protein, also called surface antigen) to enable it to infect liver cells.

The ways in which hepatitis D is spread are by shared needles among drug abusers, contaminated blood, and by sexual contact, essentially the same ways as for hepatitis B.

Patients who already have chronic hepatitis B infection can acquire delta virus infection at the same time as they acquire the hepatitis B infection or, alternatively, on top of a chronic hepatitis B infection. Patients with chronic hepatitis due to hepatitis B and hepatitis D viruses develop cirrhosis (severe liver scarring) rapidly. Moreover, the combination of delta and B virus infection is very difficult to treat.

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