'You do all it then - you're the boss', said the dad to his ten-year-old daughter, as they struggled to don her swimming hat. Yesterday marked week four of swimming lessons for one of my children; it was also the day the UK government recommended a single-dose COVID vaccine for 12-15-years-olds in England. The science of the decision is covered elsewhere. Here I want to ask what are the considerations for Christians and Christian parents? Who is the 'boss' when it comes to deciding whether to have the vaccine or not? As a Christian, a parent of a twelve-year-old, and a paediatrician, there seems much to ponder.