Trump’s Vaccine Order: MMR Shot Could Be Split—But It’s Not Even Possible

President Donald Trump signed an executive order on Monday that calls for major changes to how children in the US are vaccinated. The order recommends fewer vaccinations overall. It also suggests replacing the combined measles, mumps, and rubella (MMR) vaccine with separate shots for each disease, given during different doctor visits. However, experts say this specific change is currently impossible to put into practice. No stand-alone vaccines for measles, mumps, or rubella are licensed for use in the United States. As a result, the order is likely to create confusion among parents and healthcare providers, according to specialists. The executive order marks a shift in federal guidance on childhood immunizations. While the full impact is still unclear, health officials warn that any disruption to routine vaccination schedules could affect child immunity levels across the country.