Dr. Jesse Goodman

An executive order from President Donald Trump calls for separating combination shots, such as the measles, mumps, and rubella vaccine, into individual injections, requiring drugmakers to revive vaccines unused in decades. Public health experts criticize this plan, stating there is no scientific basis for the change, noting that implementing it would require pharmaceutical companies to conduct large studies and overhaul manufacturing facilities.

A plan proposed by Donald Trump calls for separating combination vaccines, such as MMR, into individual shots and spacing out vaccinations, which would require drugmakers to revive unused vaccine formulations and build new manufacturing plants. Public health experts argue that this policy lacks scientific basis and would impose significant financial and logistical challenges on parents and providers. Implementing the changes could take years and involve massive research and development by pharmaceutical companies.