Trump Signs Order to Separate MMR Vaccine Into Individual Shots

On August 10, 2026, President Trump signed an executive order directing that the measles, mumps, and rubella (MMR) vaccine be divided into three separate vaccines administered at different medical visits.

The order also instructed that childhood immunizations should be scheduled across multiple appointments when feasible, rather than being given together in a single visit.

According to doctors and public health experts, individual vaccines for measles, mumps, and rubella are not currently available in the United States. The MMR vaccine has been provided as a combination shot in the country since 1971, and the Centers for Disease Control and Prevention (CDC) recommends two doses of the combined vaccine as the standard for protection against these diseases.

Experts have stated that there is no scientific evidence supporting the separation of the MMR vaccine into individual shots, and that developing such separate vaccines would likely require several years. The CDC’s guidance continues to support the use of the combined MMR vaccine as the most effective approach to preventing measles, mumps, and rubella.

What the numbers show

• The executive order was signed on August 10, 2026
• The MMR vaccine has been administered as a combination shot since 1971
• The CDC recommends two doses of the combined MMR vaccine

Public health experts have stated that splitting the MMR vaccine into three separate injections could increase the number of required doctor visits and shots for children. They also said that this approach could make the vaccination process more expensive and time-consuming for families and healthcare providers.

Some experts have noted that increasing the number of appointments and injections may reduce compliance with childhood vaccination schedules. They have also stated that there is no current evidence to support the effectiveness or safety of administering the vaccines separately.

The executive order’s directive to space out childhood immunizations across separate appointments aligns with the overall approach to splitting the MMR vaccine, but it differs from the established practice of combining vaccines to minimize the number of visits and injections.

As of the date of the executive order, the combined MMR vaccine remains the standard option available in the United States, and public health authorities continue to recommend its use for full protection against measles, mumps, and rubella.

* This article is based on publicly available information at the time of writing.