t three out of five members of the FDA's Vaccines and Related Biological Products Advisory Committee (VRBPAC) "who voted to approve the rotavirus vaccine in December 1997 had financial ties to pharmaceutical companies that were developing different versions of the vaccine", while four out of eight members of the CDC's Advisory Committee on Immunization Practices (ACIP) "who voted to approve guidelines for the rotavirus vaccine in June 1998 had financial ties to pharmaceutical companies that were developing different versions of the vaccine".