lelisa, my local supermarket (which has an attached pharmacy) also kind of suggested yesterday over the loudspeaker, without saying it outright, that you could get a third dose (Moderna) there. Hook, I loved those too, although I think I had another model that wasn't labelled as a TRS-80, which was RS's PC brand. If you have the time, you can search way back on BH and find another thread that covered a lot of these pocket computer/calculators. The one you linked figured prominently. You guys are more careful than I am. First, I live in a state/area with a low infection rate and a very high vaccination rate. I was just out today and wore the same surgical mask to a CVS and another local pharmacy/personal care products store. I was in and out of both in 5-10 minutes, so I don't think I was at a big risk. Everyone was still standing apart in line. I haven't read/heard any recommendations to swap to new masks between stores. I'd think touching the old mask to put on a new one would actually be a bigger risk. I remember Fauci saying early on about not touching the mask too much.