Any police officer or any official of a municipal or community agency, who in the course of such police officer’s or official’s employment under subsection (d) of section 17a-15 or section 46b-120, 46b-121, 46b-149 or 46b-149a provides assistance to a child or a family in need thereof, shall not be liable to such child or such family for civil damages for any personal injuries which result from the voluntary termination of service by the child or the family.