The problem with the CDC is that they tend to cook book recommendations rather than taylor medical care to the individual. I take issue with many of their recommendations.... believe it or not. The way I see it, you had better be pretty sure about what you are doing when you suggest to someone that they put a foreign substance into their body. Those conversations take up a lot of my office time. The easy, and short, answer would simply be the CDC says do it. I view that as a disservice to the people I take care of.