If you want to try to pretend that that sentence ("both vaccines may) provide...long-term protection"]means that "protection against HPV hasn't budged," go right ahead.
And the "crucial last line" is "Ongoing monitoring is essential." That doesn't mean "protection against HPV hasn't budged," either.
Fascinating, how you interpret everything to mean, "Totally safe! Totally effective!"
Taxi, you're missing the point of SkewedD's post. SkewedD read the actual article, not just the abstract, and is talking about the actual evidence presented in the article, rather than doing picky textual analysis on the abstract.