Where did hepatitis B originate?

In fact, HBV is second only to tobacco amongst known human carcinogens, causing up to eighty percent of all hepatocellular carcinomas worldwide. Where did HBV come from? Were other animals once infected by this virus before evolving defences against it? read more

The hepatitis B virus originally infected birds back when the dinosaurs still roamed the planet, according to a newly published study of genomic bird DNA, a finding that may help improve human health outcomes. read more

With respect to viral hepatitis there are the five unrelated viruses that can cause hepatitis: Hepatitis A, hepatitis B, hepatitis C, hepatitis D and hepatitis E. Hepatitis D can not function on its own and requires coinfection with hepatitis B to cause disease. read more