It's not all that regular that I venture away from the topic of vaccines. I should do it more frequently (and there is one topic I really want to write about if I find the time), but for the most part, I stick to immunizations and the anti-vaccine movement. Now and then, though, I do venture onto other, rather more nuanced subjects. There are certain areas of medicine and ethics that are far less clear cut than whether or not vaccines are safe and effective. For instance, what happens when pa...