“The question in this case is whether a claimant who shows that she experienced symptoms of an injury after receiving a vaccination makes out a prima facie case for compensation under the National Childhood Vaccine Injury Act of 1986, 100 Stat. 3755, 42 U. S. C. ยง 300aa-1et seq. (1988 ed. and Supp. V), where the evidence fails to indicate that she had no symptoms of that injury before the vaccination.”
“We hold that the claimant does not make out a case for compensation.”