This bill proposes to amend the Public Health Service Act by directing the Secretary of Health and Human Services to establish a demonstration program . The primary goal of this program is to award grants to states to significantly improve the provision of recommended immunizations for children, adolescents, and adults. States receiving these grants would utilize the funds to establish or expand mobile vaccination units within their jurisdictions. These funds are also intended to cover the associated costs, including the acquisition of necessary vehicles, equipment, and vaccines to operate the mobile units effectively. The Secretary is mandated to submit a report to Congress by September 30, 2027, detailing the program's effectiveness and offering recommendations on its potential continuation and expansion. This initiative seeks to enhance immunization access and delivery across various age groups through innovative mobile health solutions.