Hepatitis B is a liver infection caused by the hepatitis B virus (HBV)，some of HBV infections is acute, or short-term but for others, it can become a long-term, chronic infection. Risk for chronic infection is related to age at infection. Chronic HBV can lead to serious health issues, like cirrhosis or liver cancer.
In 2017, the total infected HBV patient number reached 96.2 Million in China, and there is 1.0 million newly infected HBV patients.
Although there exist interferon and nucleoside analogs therapies, HBV can NOT be cure as of now.