It is usually given by injection into a muscle, or sometimes under the skin.
It is given as a series of three doses under the NCIS and the NAIS.
Under the NCIS, the Hepatitis B vaccine may be given on its own as one shot, or in combination with other vaccines (e.g. Diphtheria, Tetanus, Pertussis, Polio and Hib) as one shot.
A booster dose may be required in certain patients with specific medical conditions such as kidney problems (e.g. on haemodialysis) or a weak immune system.