It's a crappy ass reporting system to track adverse events that may or may not be associated with vaccinations.
It was set up purposefully to be crappy so that all of these adverse events can be written off by vaccine manufacturers and their advocates. No scientifically rigorous reporting system for adverse reactions to vaccinations exists, so we have to make do with this crappy system that just happens to show
http://sanevax.org/pdf/11.10%20VAERS%20Analysis1%5B1%5D.pdf">89 deaths associated with HPV vaccination to date.
We don't really have any idea how many of these are deaths to which Gardasil or Cervarix vaccinations actually contributed. Then again, we also don't have any idea how many cervical cancer deaths Gardasil or Cervarix will supposedly protect against 40+ years from now,
http://jama.ama-assn.org/content/302/7/795.extract">JAMA Editorial
When do physicians know enough about the beneficial effects of a new medical intervention to start recommending or using it? When is the available information about harmful adverse effects sufficient to conclude that the risks outweigh the potential benefits? If in doubt, should physicians err on the side of caution or on the side of hope? These questions are at the core of all medical decision making. It is a complicated process because medical knowledge is typically incomplete and ambiguous. It is especially complex to make decisions about whether to use drugs that may prevent disease in the future, particularly when these drugs are given to otherwise healthy individuals. Vaccines are examples of such drugs, and the human papillomavirus (HPV) vaccine is a case in point. ...
Likewise, it is impossible to predict exactly what effect vaccination of young girls and women will have on the incidence of cervical cancer 20 to 40 years from now. The true effect of the vaccine can be determined only through clinical trials and long-term follow-up. ...
VAERS is a passive, voluntary reporting system, and the authors call attention to its limitations. They point out that only systematic, prospective, controlled studies will be able to distinguish the true harmful effects of the HPV vaccine. These limitations work both ways: it is also difficult to conclude that a serious event is not caused by the vaccine.
Whether a risk is worth taking depends not only on the absolute risk, but on the relationship between the potential risk and the potential benefit. If the potential benefits are substantial, most individuals would be willing to accept the risks. But the net benefit of the HPV vaccine to a woman is uncertain. Even if persistently infected with HPV, a woman most likely will not develop cancer if she is regularly screened.15 So rationally she should be willing to accept only a small risk of harmful effects from the vaccine.