One of those cited resources just keeps citing other people for a 5% risk, if they came up with their own number I didn't find it and I wonder why they'd cite somebody else in their own abstract without even mentioning they don't agree if somewhere in their work they do get a different number.
The other citation from the second link seems to be a paper which doesn't say 3% it says, and I'll quote: "The main explanation for HPV-negative cervical cancer was a false diagnosis, followed by cancers associated with non-HR-HPV types, and false-negative HR-HPV results. Truly HPV negative seem to be very rare in Caucasian populations".
If they're to be taken for 3% the only way to get there is by disregarding that conclusion and deciding that false negatives count as true negatives. Reviewers should ideally catch that but didn't here.
As I said, I don't doubt it exists, but 8% seems insane and these citations did not persuade me I was wrong to say 0.3% based on the paper you don't like.