What else causes viral hepatitis?
Some cases of viral hepatitis cannot be attributed to the hepatitis A, B, C, D, or E viruses, or even the less common viruses that can infect the liver, such as cytomegalovirus, Epstein-Barr virus, herpesvirus, parvovirus, and adenovirus. These cases are called non-A–E hepatitis. Scientists continue to study the causes of non-A–E hepatitis.