I could think of one, but I am not sure it would apply with the Federal .gov. That would be a desire to track differences in health going forward between the different categories.I'm of the opinion that "partially vaccinated" would be a very large number. Many people didn't follow through with rounds 2 - 5 (or whatever they're up to). I suspect much of the numbers of fully vax'd to be erroneous - think fake cards, legitimate mix ups, etc. What I cannot contemplate is a reason for wanting to know, unless there will be future actions taken against the unvax'd/ undervax'd. And what might those future actions be?