Hepatitis C is an inflammation of the liver. While different things can cause other types of hepatitis, a specific virus -- the
hepatitis C virus -- causes hepatitis C. This virus is also known as HCV.
Acute Versus Chronic Hepatitis C
There are two types of hepatitis C: acute and chronic. In acute hepatitis C, the body is able to completely kill the hepatitis C virus. This happens in about 15 percent of people infected with the virus. In about 85 percent of people infected with HCV, the body is not able to completely get rid of the virus and they end up having a long-term liver infection. This is called
chronic hepatitis C.
Just as there are different types of hepatitis viruses, there are also a few different types of the hepatitis C virus itself.
These are known as
hepatitis C genotypes. The main hepatitis C genotypes are known simply as: genotypes 1, 2, 3, 4, 5, and 6. The genotype is important to know because some genotypes are harder to treat than others.
Of the different genotypes, genotype 1 is the type most commonly found in the United States. Between 70 and 90 percent of Americans with hepatitis C have this genotype. Genotypes 2 and 3 are less common. Only 10 to 20 percent of infected people in this country have either of these genotypes.