Abstract: A casket-installed guard for guarding a body and for shielding against contagion includes a plastic dome with margins having engagement features that can lock the guard in location sealing the viewing opening in the casket but permitting the viewing top to be in either open position or closed position over it; the margins are proportioned for detachable installation under inwardly overhanging edges and second top of the casket so that they are shielded from tampering; one of the margins has provision for securance of the unit by padlock.