a bitter poptart
As you may know all vaccines come with risks and whatnot, I'm more concerned with it's worthiness, at the same time I'm guessing to weigh it out risks are better than the possibility of a deadly cancer?
Of course they do. All vaccines comes with risk of anything ranging from some short-term flu like symptoms to getting really weird and sometimes terrible perm. diseases. The swine-flu vaccine which gave some users cataplexy as a result created a big uproar in my country. However, the vaccine was fastly pushed forward (thus not securely tested.. which is darn stupid), plus the population that ended up with cataplexy was a small amount. That being said, the lives of those people will be changed forever since they'll end up unable to do things due to the cataplexy.
I'd say it weighs out the risks of getting cancer. Anything that prevents cancer is great. I seem to be surrounded by people who get different types of cancer, and the outcomes of that sucks. A friend of mine had to have her whole female inner-plumbing removed cause of cancer. She has to take supplements and additional meds for the rest of her life now, and that's not funny either.
I do understand that the fear of side-effects and risks associated with vaccines is great. No one wants to risk getting something crappy, just cause they were trying to prevent something else. It's really sad when it does happen.
That being said, I really don't think the vaccine you're looking for is a high-risk one since it has had such a long developing and distribution time already. If it had a wide-spread chance of inflicting great potential harm, it would be taken off the market.