(a) Notwithstanding the provisions of sections 45a-746 to 45a-754, inclusive, the department and each child-placing agency which was party to, or participated in, either applications for approval of adoption agreements or termination of parental rights shall maintain registries. Such registries shall contain registrations of voluntary consents, refusals of consent and revocations of consent to the release of information which would identify the registrant. In the case where no child-placing agency was party to or involved in either proceeding, the Department of Children and Families shall establish and maintain such registry. At any time following the termination of parental rights, the registration may be filed by: (1) A biological parent who was a party to the proceeding for the termination of parental rights; (2) an adult adopted person, an adult adoptable person, an adult adopted biological sibling of an adoptable or adopted person, or an adult nonadopted biological sibling of an adoptable or adopted person; (3) lineal ascendants and descendants of a deceased biological parent; (4) an adoptive parent for the purpose of obtaining medical information which affects an adopted person; or (5) a person claiming to be the father who was not a party to the proceeding for the termination of parental rights. No registrations shall be accepted unless the child-placing agency or department is satisfied as to the identity of the registrants.

(b) Notwithstanding the provisions of sections 45a-746 to 45a-754, inclusive, the department and each child-placing agency which was a party to, or participated in, either applications for approval of adoption agreements or termination of parental rights shall maintain registries for medical information. The department and each such child-placing agency shall receive medical information concerning an adopted person provided by a biological parent or blood relative of such adopted person. Upon receipt of such information, the department or child-placing agency shall notify such adopted person or, if such person is a minor, the adoptive parent of such adopted person of the availability of such information, provided the department or child-placing agency has the address or telephone number of such adopted person or adoptive parent. No information that would tend to identify the biological parent or blood relative providing the medical information shall be disclosed without the consents required by subsection (a) of this section.