No, it's not experimental - the jab definitely stops the virus and the virus definitely causes cancer. The question is, will the immunisation programme be successful. Cervical cancer doesn't tend to present until early/middle age (hence the screening programme runs from 25 upwards), so it will be a while until we know whether it has had any impact on it.
It's true, the chances of getting the warts if you aren't sleeping around is pretty slim, so some people may choose the chastity belt option over a vaccine. Danneh - unless you are a girl, you don't need to get it done anyway.
I don't understand what the fuss is about - no one explains to kids what the polio vaccine is for, you just eat your sugar cube and that's the end of it. To suggest that having another jab is going to necessitate sitting little Lucy down and telling her it's now very, very slightly safer for her to sleep around is pretty ludicrous - besides, until they find one for all the other STDs, it's hardly any less risky.
Unfortunately, nothing sells papers quite like a good scare, which has unfortunately meant that people view immunisation with suspicion now, rather than the life-saving programme it is. (For the record, MMR is and always has been fine. If your children haven't been immunised, go and do it now

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The down side to all this furor is that immunisation is a public health intervention - it works for the greater good. If 30 kids in a class have had MMR for example, the chances of the 3 that for some reason haven't getting it are pretty slim because who are they going to catch it from? But if more like half the children's parents decide not to have their child immunised, suddenly there's a lot greater chance that the disease will run riot. Hence, your not just protecting your children, you are helping to actually iradicate the disease a la small pox.