Are drug companies legally liable for the safety and efficacy of their vaccine products?
No. Vaccine manufacturers and others are sheltered from product liability lawsuits by a special 1986 act of Congress. (See the US Code 42 USC 300aa for details.) This act set up a fund to compensate those who can prove serious injury from vaccines. For payments to date and other information, see the National Vaccine Injury Compensation Program (VICP).