No employee of the Office of Vital Statistics or other state offices established or designated under § 3105(b) of this title shall be subject to, and such persons shall be immune from any claim, suit, liability or damages or any other recourse, civil or criminal, arising from any act or proceedings, decision or determination undertaken or performed while discharging any duty or authority under this chapter, so long as such person acted in good faith, without gross negligence, and within the scope of the person's own duty or authority under this chapter or any other provisions of the Delaware law, federal law or regulations or duly adopted rules and regulations providing for the administration of this chapter, good faith being presumed until proven otherwise, with gross negligence required to be shown by the complainant.