Re: CVS and Walgreens v local pharmacies: I was wondering the same thing. My dad’s large nursing home has lots of experience with giving vaccines to its residents, and it has used one particular excellent pharmacy to do so. Seems inefficient or outright nuts to force them to work through CVS and Walgreens when they already have the expertise in house.
Re: Allergic reactions. I have been getting flu shots for decades, and they always want you to hang around for a while afterwards to be sure that you will be near them if you need to be stuck with an epipen. Allergic reactions are rare, but the protocols for dealing with them have been in place for decades. This vaccine isn’t unique that way.