Health: immunizations; access to the Michigan care improvement registry; restrict and expand the registry to include the reporting of adverse events resulting from immunizing agents. Amends secs. 9206 & 9227 of 1978 PA 368 (MCL 333.9206 & 333.9227).

HB 5486 amends Michigan's Public Health Code to require healthcare providers to report adverse events from vaccines starting January 1, 2027, including specific details like symptoms, outcomes, and medical test results. It directly affects healthcare providers (doctors, clinics, hospitals) who administer vaccines and parents/guardians who may opt out of immunization reporting via written notice. The bill expands the Michigan Care Improvement Registry to include adverse event data while maintaining parental opt-out rights for immunization reporting. Crucially, it prohibits schools and school officials from accessing the registry, reinforcing privacy protections for health records. These changes update existing requirements established in 2023 and 2006, with new adverse event reporting mechanisms taking effect in 2027.