Prohibiting use of vaccination status in certain administrative and legal proceedings.

SB 5783 prohibits Washington courts and administrative agencies from using a person's vaccination status as evidence or a factor in specific legal decisions. The law applies to guardianship cases (for minors or incapacitated adults), child custody/visitation disputes, adoption proceedings, and related family law matters under chapters 11.130, 26.09, 26.33, and 26.44 of the Revised Code of Washington. It explicitly bans courts from admitting vaccination status in evidence or considering it when making rulings on these issues. This change directly affects parents, children, adoptive applicants, and family courts handling such cases within the state.