JAMA:
March 14, 2025
Revising US MMR Vaccine Recommendations Amid Changing Domestic Risks
"...The committee outlines a few special cases for the administration of a third lifetime dose, including during an ongoing measles or mumps outbreak and among high-risk groups (eg, health care workers and immunocompromised individuals). Additionally, for children aged 6 to 11 months scheduled to travel internationally, the committee recommends an additional early dose (ie, a third dose) of the MMR vaccine before travel, administered before initiating their routine 2-dose series at age 12 months. Historically, disease importations from unvaccinated children traveling internationally to endemic regions has been the major source of US measles cases. However, multiple recent US measles outbreaks, coupled with low vaccination rates, signal a growing domestic hazard..."
https://jamanetwork.com/journals/jama/article-abstract/2831828