Modern science and vaccinations have led to several of the world's deadliest diseases among infants being wiped out in developed countries like Britain and the US. However they are only effective when the whole population is vaccinated, otherwise infections and diseases like smallpox and measles can attack those most vulnerable. The development of new vaccines is governed by strict regulations, and FDA consulting is vital to ensure that public safety is maintained. The regulating bodies test every lot of vaccines that is produced before it is given to the public as this reduces the chance of any adverse side effects caused by the vaccine.
Recently there has been public concern over the safety and effectiveness of the Gardasil/Cervarix vaccine used to prevent Human Papillomavirus or HPV and cervical cancer in girls aged between 9 and 26. The FDA in the US has promised to keep a close eye on any adverse effects reported to health care officials following a vaccination, but so far their results have found no common causes to the side effects reported.