From pre-clinical studies and years of phase 1, 2, and 3 trials to continued monitoring after a vaccine is approved and added to the immunization schedule, the vaccine testing and development process helps make sure that vaccines are safe and that they work.
Although plenty of vaccines are made in China, the vaccines that are used in the United States are not, although anti-vaccine folks use this as a talking point to scare parents away from vaccinating and protecting their kids.
Although the study design for Gardasil used for licensing in Europe might have been suboptimal, although that doesn’t really come across in this Slate piece, it seems clear that it didn’t result in safety data being missed, and as post-licensure tests have confirmed, Gardasil is safe.
Vaccines are made using a very safe and scientific process that is heavily regulated that will neither scare nor shock you.
