Hepatitis A & B combination
Protection: after 3 vaccinations, the protection for hepatitis A is at least 25 years. The protection for hepatitis B is lifelong.
Schedule: before you leave you will need two vaccinations with one month in between. After returning (6 to 12 months) you will get a third vaccination.
Children: Ambirix (hepatitis A + B): one vaccination before departure. After returning a second vaccination after 6-12 months. The protection is at least 40 years.