Would disposable tweezers be an option? (I am not Catholic so I do not know if the Priest has to actually touch the Host)
But that's only part of the problem....Here is NY, they have lay people distributing communion and they too, touch every host, though it is commonly put in the hand and not directly on the tongue.
Cardinal Robert Sarah, head of the Congregation for the Doctrine of the Catholic Faith (CDF), has looked into arguably similar measures currently proposed for use in Germany. Bishops there are suggesting placing the Consecrated Host in disposable plastic baggies to be carried by the faithful away from the altar. Cardinal Sarah found such measures unfit due to a failure of the proper reverence shown to the miraculous presence of the Living God.
Now if the tweezers were made of gold instead?
Yeah, I know, not single-use and thus potentially unsanitary... X-(
IMHO, at some point we need to accede to God’s providence in such matters and stop running from perceived danger.