When my baby was just a year old, it was a chaotic time in our lives. We moved twice, and somewhere between him reaching his developmental milestones and us unpacking boxes, hisimmunisation charts disappeared. I know he had all his shots in hospital after he was born, and he would surely have had the necessary jabs at his sixweek visit, but after that I’m not too sure. Can one start on a clean slate and repeat all the immunisations? Is it harmful to immunise twice against the same illness? Is it too late when baby’s turned one for all the jabs he’s missed? What should I do?