Study shows how toxic RFK Jr.’s change to measles vaccine is for US toddlers

The Trump administration, under Health Secretary RFK Jr., has proposed breaking up combination vaccines like MMR (measles, mumps, rubella) into separate shots , and medical organizations including the American Academy of Pediatrics warn that reducing vaccination rates will increase preventable diseases . A recent study published by Ars Technica appears to document the negative health impacts of these vaccine schedule changes on vulnerable toddlers. The proportion of children with no MMR vaccine recorded by age 2 increased from 5.3% in 2020 to 7.7% in 2024 , indicating delayed vaccination uptake among young children.

Source: Ars Technica | 2026-07-10