Because unlike regionally based illnesses we didn't discover a genetic disposition. And these things are well researched due to the need to control for variables. Hpv is prevalent globally, not at all a regional issue. Our genes treat it equally, because its prevalence normalised its effects.
Regional differences might actually cause a nasty strain of hpv to arise, and it would again effect us equally if infected.
Regional differences might actually cause a nasty strain of hpv to arise, and it would again effect us equally if infected.