There are three forms of hepatitis, and they infect up to 6 percent of the people in the United States. Drugs that fight this viral infection, which attacks the liver, have been approved but many people go untreated because they mistakenly believe their symptoms are caused by something as common as the flu. There is a timeline on the history of detection and treatment of the disease.

Hidden for centuries -- Alphabet disease -- A long process -- Getting younger -- Gaining momentum.