No Legal Requirement to Improve Vaccines Vaccine manufacturers are under no legal requirement and have no financial incentive to improve their vaccines.  This is primarily a legal decision by the government.  Here’s some of the history: In 1986, Congress enacted the National Childhood Vaccine Injury Act (NCVIA) against the backdrop of a wave of tort … Continue reading Vaccines are allowed to have side effects. Some vaccines have not been improved in 50 years