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Why does that seem important? The “in mice” one makes sense (such results might not be the same in humans), but is there a reason to think that results achieved here in England couldn’t happen elsewhere?
Basically it's definitely possible that you could get cervical cancer without HPV. There's a scientific disagreement about whether in some populations that's say 5% prevalent while others it's more like 0.1% prevalent, or whether they're more similar, but it clearly can happen. Outside science this can turn into "England is very, very white, so, this is basically only a study of white women" which as you observe isn'…
It can happen elsewhere but it hasn't happened yet! Or who knows!