US health officials are proposing to separate the MMR vaccine into three individual shots, a move met with concern from public health experts. They argue this change lacks scientific justification, could complicate vaccination schedules, reduce access, and lead to lower immunization rates. The combined MMR vaccine has been proven safe and effective since 1971. Experts warn that falling vaccination rates risk resurgence of serious diseases like measles, endangering vulnerable populations including infants and immunocompromised individuals.

Prepared by Olivia Bennett and reviewed by editorial team.