Robert F. Kennedy Jr. on vaccines: what the evidence says · JRE #1999

“You know, I said not one of these 72 vaccines has ever been tested pre-licensing in a placebo-controlled trial where you're looking at vaccinated versus unvaccinated kids and looking at health outcomes. Never been done.”

What the evidence says

Kennedy claimed that not one of the 72 vaccines on the U.S. childhood schedule has ever been tested pre-licensure against a true placebo, comparing vaccinated to unvaccinated children on health outcomes. FDA licensing records and peer-reviewed publications document at least one clear counterexample: the rotavirus vaccine RotaTeq was evaluated pre-licensure in 3 placebo-controlled clinical trials totaling 71,725 infants (36,165 vaccine recipients vs. 35,560 placebo recipients), with parents/guardians contacted after each dose to track intussusception, other serious adverse events, and deaths as outcomes, per RotaTeq's FDA-approved prescribing information. A separate large randomized, double-blind, placebo-controlled trial of another rotavirus vaccine (Ruiz-Palacios et al., New England Journal of Medicine, 2006) enrolled 63,225 infants roughly split between vaccine and placebo arms and measured severe gastroenteritis, hospitalization, and intussusception as health outcomes. Because Kennedy's claim is an absolute ('not one... ever'), even one documented pre-licensure placebo-controlled trial with health outcomes is sufficient to make the claim as stated false, regardless of how the broader vaccine schedule's testing history is characterized.

1. RotaTeq (Rotavirus Vaccine, Live, Oral, Pentavalent), FDA Prescribing Information · government
2. Safety and efficacy of an attenuated vaccine against severe rotavirus gastroenteritis - PubMed · government