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Hepatitis B
Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). It can lead to chronic liver disease, liver failure, liver cancer, and even death. Hepatitis B is a major global health problem, particularly in areas with high prevalence. 
Hepatitis B can cause a chronic infection and puts people at high risk of death from cirrhosis (severe scarring of the liver) and liver cancer.
It can spread through contact with infected body fluids like blood, saliva, vaginal fluids and semen. It can also be passed from a mother to her baby.