what is a delta caused by
Delta hepatitis is caused by a virus that only infects people who already have hepatitis B. The delta hepatitis virus (also known as hepatitis D or HDV) is an RNA virus, meaning that its genetic material is made up of ribonucleic acid.eople who already have chronic hepatitis B can acquire delta hepatitis, as well. This often causes severe inflammation of the liver, and the viruses are less likely to be cleared. Delta hepatitis makes chronic hepatitis B much worse.