intent to have a ward vaccinated intent to have a child vaccinated An intent to have a ward vaccinated where the guardian is a parent (natural or adoptive) and the ward is a child (natural or adopted) of that parent, and the parent has not otherwise been legally barred from making healthcare decisions for the child. Intent to have one's child vaccinated. The case of adult children is eliminated through the use of guardian and ward roles in the definition. The parent no longer has a guardian role, and the child no longer has a ward role, once the child is of legal age to make their own decisions. That is, those roles cease to exist. William R. Hogan