![](https://www.mtatva.com/en/wp-content/uploads/2016/05/syringe-435809_1920-150x150.jpg)
Hepatitis B vaccine protects against hepatitis B. It is administered as intramuscular injection. A baby who is born to a chronically infected mother has a 70%–90% chance of being infected at birth. Many people who are chronically infected will suffer from serious problems such as cirrhosis (scarring of the liver) or liver cancer.