Peter Nguyen was a promising medical student when his school learned that he had tested positive for the hepatitis B virus. He said he was blackballed by school administrators and forced to halt his studies. "I knew the stigma" that came with a hepatitis diagnosis, Nguyen said. But he thought that a medical school, of all places, would understand. "I came there expecting help. Instead, I was greeted with discrimination." Nguyen's prospects of becoming a physician are a lot brighter today. The Department of Justice recently declared in a legal settlement that hepatitis B patients are protected by federal disability law.