As I understand it, a 'sex disease' is exactly what papilloma is - it's a sexually transmitted condition.
OK, the 'shorthand' expression may be a little abrupt, but it is the virus, not the resulting cancer that the inoculation prevents.
The question does not say, or infer that cervical cancer is a sexually transmitted disease - and even it it were, that does not make it ineherntly less of a tragedy than any other form of cancer.
Sexual activity is simply the conduit by which this virus spreads - it in no way infers that anyone becoming infected has somehow received some kind of just deserts for deviant behaviour.
I think the Ed. is, as usual, looking to promote thoughtful debate, and would never knowingly wish to offend any section of the AB family - and I don't think offence has been caused here, judging by netibiza (a long term AB'er)'s response.