Hepatitis B is best prevented by vaccination. The following groups who are at highest risk for contracting hepatitis B should be vaccinated:
Side-effects of vaccines are rare and include local soreness at the injection site, mild fever, malaise but extremely infrequently may cause swelling of the lymph nodes (glands in the neck, groin, armpits ), and abnormalities of the nervous system.
The vaccine is administered at time 0,1 and 6 months. However, before one gets vaccinated, one should check oneself for the immune status. Only those who are non-immune to hepatitis B and not carriers should be vaccinated.