To repeal certain amendments to the National Vaccine Injury Compensation Program.

Amends the Public Health Service Act to repeal provisions of the Homeland Security Act of 2002 amending the National Vaccine Injury Compensation Program under the Act. Repeals modifications to the definitions of manufacturer and vaccine-related injury or death and an added definition of vaccine. States that this Act shall be deemed to have taken effect immediately after the enactment of the Homeland Security Act of 2002.