CVS's implementation seems quite pathetic (I'm not looking forward to the Walmart rollout with these ****ty "privacy panels" and no space for waiting/observation) but leftover vaccine was always gonna be a problem if you are trying to "de-centralize" vaccine distribution and rollout gonna be slow if you try to allocate doses to maximize finishing the 2-dose series timely. Frankly, different timing of course was not studied but why would it really be an issue in reality tbh
Here's an article on this issue with Safeway offering leftovers to rando customers at the end of the day (LMAO):
How Should Pharmacies Handle Extra Doses of COVID-19 Vaccine?
How does one have
16 (??????) leftover doses that will go to waste if unused though?