The committee was not charged with making recommendations, and it did not pinpoint any particular areas for continued research. Much research already occurs to determine the safety of vaccines for the populations for whom they are recommended (emphasis added). However, there is much to learn about the human immune system, autoimmunity, and the effects of genetic variation, all of which may influence how people respond to vaccines.
Vaccines offer the promise of protection against a variety of infectious diseases. Despite much media attention and strong opinions from many quarters, vaccines remain one of the greatest tools in the public health arsenal (emphasis added). Certainly, some vaccines result in adverse effects that must be acknowledged. But the latest evidence shows that few adverse effects are caused by the vaccines reviewed in this report.
(2011). Adverse Effects of Vaccines: Evidence and Causality. The Institute of Medicine. Retrieved 29/08/2011. http://www.iom.edu/Reports/2011/Adverse-Effects-of-Vaccines-Evidence-and-Causality/Report-Brief.aspx?page=2