Comment by yieldcrv

so far the comments are adding more vectors to understanding the situation, but nothing that fundamentally changes the user experience

I think the most insightful thing is that there are 9 HPV variants some of which someone wouldn't have exposure to so its worthwhile to get the vaccine anyway

but other than that, the situation is the same. for men's age the utility of the vaccine is based on probability alone, as its a waste of resources to even attempt checking for prior/current exposure