If neither parent of the newborn child whose birth is unattended is able to prepare a birth certificate, the state registrar or the state registrar’s designee shall secure the necessary information from any person having knowledge of the birth and prepare and file the certificate. The secretary shall prescribe the time within which a supplementary report furnishing information omitted from the original certificate may be returned for the purpose of completing the certificate. Certificates of birth completed by a supplementary report shall not be considered delayed or altered.