I agree, if you are being vaccinated in a hall the size of a football field the risk is not very high. I am more concerned looking at e.g. the list of sites at

I agree, if you are being vaccinated in a hall the size of a football field the risk is not very high. I am more concerned looking at e.g. the list of sites at vaccinateca.com that are located inside of grocery stores or drug store chains. Those places are not going to have good ventilation.