The US National Childhood Vaccine Injury Act of 1986 eliminated all vaccine manufacturers’ liability. Congress—recognizing that drug companies no longer had any incentive to make vaccines safe—ordered the US Department of Health and Human Services (DHHS) to study vaccine injuries, work to improve vaccine safety, and report to Congress on its progress every two years.
DHHS has not sent any of these mandated safety reports to Congress in over 30 years. Instead the CDC (the branch of DHHS concerned with vaccines) relies on brief and poorly conducted manufacturers’ studies, which rarely use truly inert placebos for their control populations.
Also, vaccine safety testing does not follow test subjects more than a few days or weeks, thereby missing any long-term damage to the immune system, such as allergies, asthma, and autoimmune diseases that take much longer to appear. Therefore the safety of all vaccines is in question, since proper testing and long term follow up has not been done.