From reading the abstract, that study comes to the interesting finding that with a highly effective vaccine, it is better to vaccinate the YOUNG first, to reduce the spread.
What about... workers in the cafeteria who handle our food, cashiers at supermarkets and waiters who bring food over to you. I'm shocked most of the papers I'm reading don't mention these folks who are at the very intersection of our daily lives!
The paper assumes those people are vaccinated first, before the analysis for other age groups comes into play.
"Here, we consider that front-line health care workers and other essential personnel (e.g. firefighters, police) who should obviously be prioritized, have already been
vaccinated."
Probably too late for anybody's interest, but the risk of getting this from food is suspected to be incredibly low. Droplets being inhaled, entering through the eyes, or nasal mucous membranes are the likely real threats.
I guess that makes sense. The young seem to be the primary spreaders of the disease. Stop them, and then it slows the whole chain of infections. I can also see why they'd want to vaccinate the most vulnerable, if the young aren't really affected by the disease, it makes sense to skip them first. Conundrum I suppose.