What's Behind RFK Jr. 's Measles Vaccine Claim? Robert F. Kennedy Jr. , a prominent environmental activist and nephew of President John F.
Kennedy, has been making waves in the medical community by claiming that a Pennsylvania child's measles death was hastened by the vaccine.
The PA Child at the Center of the Controversy At the heart of Kennedy's claim is a young boy from Pennsylvania who lost his life to complications related to measles vaccination.