Hepatitis virus is the group of viruses that cause disease named "HEPATITIS-inflammation of liver cells". This group contains different hepatitis viruses i.e. Hepatitis A Virus, Hepatitis B Virus, Hepatitis C Virus, Hepatitis D Virus, Hepatitis E Virus, Hepatitis F Virus, Hepatitis G Virus.

Hepatitis A Virus, Hepatitis C Virus, Hepatitis D Virus, Hepatitis E Virus, Hepatitis G Virus is single stranded RNA retrovirus while Hepatitis B Virus is double stranded DNA retrovirus. Once the virus enters in the human body, they enter in the liver and begin to reproduce. The body attacks the infected cells, which cause the liver to become inflamed.
    > The hepatitis A and E viruses first enter the gut and begin reproducing. They        spread to the liver and multiply in liver cells.
    > Hepatitis B, C, D, and G enter the bloodstream; when they pass through the liver,        they enter liver cells and begin to reproduce. The body attacks the infected cells,        which causes the liver to become inflamed.

The 11 strains of Hepatitis Virus are used in this database. These are as follows with their GenBank Accession no.

1. Hepatitis A Virus (NC_001489)
2. Hepatitis B Virus (NC_003977)
3. Hepatitis C Virus, Genotype 6 (NC_009827)
4. Hepatitis C Virus, Genotype 5 (NC_009826)
5. Hepatitis C Virus, Genotype 4 (NC_009825)
6. Hepatitis C Virus, Genotype 3 (NC_009824)
7. Hepatitis C Virus, Genotype 2 (NC_009823)
8. Hepatitis C Virus, (NC_004102)
9. Hepatitis D Virus, (NC_001653)
10. Hepatitis E Virus, (NC_001434)
11. Hepatitis G Virus, (NC_001710)