Generally revise laws related to immunizations

This bill updates Montana laws governing school immunization records and reporting requirements. It requires schools to maintain written immunization and exemption records for all students while protecting these health records under federal privacy laws. The bill mandates that schools submit deidentified or aggregate immunization data to state and local health departments in a format specified by the Department of Public Health and Human Services. It also clarifies enforcement procedures for students who fail to meet immunization requirements by prohibiting their continued attendance until compliance or exemption is obtained. These changes take effect on July 1, 2025.