Hepatitus B More Condition_symptoms Why Do You Need Hepatitus A & B Before Going To Another Country? How Often Do You Need To Get The Shots?

Why do you need Hepatitus A & B before going to another country? How often do you need to get the shots? - hepatitus b more condition_symptoms

I'm going to Hong Kong, 24 April to 5 May. Is there a vaccine that is required in addition to hepatitis?