The current study highlights the importance of being able to scale up and accommodate early vaccination during outbreaks or other public health emergencies, wrote … Sean T. O’Leary, of the University of Colorado Anschutz, Aurora, Colorado, in an accompanying editorial. “Despite challenges from mis- and dis-information, vaccine refusal, and uneven access, families and clinicians mobilized quickly when faced with the threat of measles,” they said. The rapid uptake likely contributed to the reduced spread of illness by May 2025.