Well, which one of your parents shall be sacrificed? Or, pick a son, a wife, a cousin - maybe she wont mind.
In all my readings about the Great Depression (with analogous unemployment rates and a decade of destitution), I dont recall the solution offered was sacrifice grandma.
There are advances every day by scientists, etc. California just announced, for example, a serology test which will show who is immune (assuming immunity actually is conferred).