Hi, I am a medical student and due to delays in vaccinations I am worrying about getting them all done in time for my clinical years which start in August. I was wondering if you were able to help me? I am wondering, if when I complete a course of hepatitis B vaccinations the blood test results show that I am not immune. Can a second course be carried out on the accelerated basis. I.e. At 0,1,2 months or 0,7,21 days; with a booster at 12 months. Or does it have to be on the standard 0, 1, 6 month course? Many thanks.