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Kinds of Hepatitis
There are many kinds of hepatitis, including hepatitis A,
B, C, D,
E, and G.
Each kind of hepatitis is caused by a different virus. Some of these
do not cause serious infections, and may not even cause symptoms.
Hepatitis A and B are most likely to cause symptoms, and hepatitis B and C have the
greatest chance of causing long-term health problems. (There are vaccines available
for hepatitis A and hepatitis B. Hepatitis A is a much less serious infection of
the liver than hepatitis B and C.)
The biggest differences between the hepatitis B and C viruses are how they are spread,
whether they become chronic (lasting more than 6 months), and how the virus mutates.
A mutation is a permanent change in the virus’s genetic code, or makeup, resulting
in a slightly different form, or strain, of the virus. Both the hepatitis B and C
viruses mutate in the body, but the hepatitis C virus mutates so often that the body
ends up fighting many different strains of the virus. Therefore, it is harder for
the body to fight hepatitis C than hepatitis B. There is a vaccine for hepatitis
B, but not for C.
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