The hepatitis B vaccine protects against infection with the hepatitis B virus.
The vaccine is a synthetic vaccine.
It is 90% effective in children but is less effective in those over 30.
The vaccine is given at six weeks, three months and five months.
Most people recover from hepatitis B but some people can become chronic carriers and the virus can stay in the liver and lead to liver damage and cancer.
People with Hepatitis B can pass the virus on to others through blood or sexual intercourse.
By preventing infection with Hep B, the vaccine can prevent liver cancer caused by Hepatitis B.
Over 1 billion doses of Hepatitis B vaccine have been used since 1981 with an outstanding record of safety and efficacy.
Hepatitis B is the first vaccine against a human cancer.
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