So let me get this straight because someone didn't write out NaCl it doesn't count? LMAO!!! That's no different than when someone tries to claim the COVID results for day 14 are the results the FDA should go with while ignoring the day 28 results. LMAO LMAO LMAO
They're biologics. There is no formula the way there would be for a small molecule. You'd have a salt form of a small molecule to bring it in and out of solution more easily so you could purify it. Salt in a biologic would be part of a buffer to keep it suspended and from degraded to quickly. It wouldn't have a salt added to it the way a chemist would do for a small molecule.
The mRNA vaccines don't have antigen exposure the way a classic vaccine does. They use the body the same way a virus does to create the antigen within the body so antibodies can be raised.
I believe attenuated viruses are less common for classic vaccine and instead the antigen is genetically inserted into a vector/plasmid, copies are churned out in large flasks and the antigen bearing vector is purified and added to a buffer solution (which would include salts) and put in vials for distribution.
The salt you put on your salad is NaCl. Na is positively charged. Cl is negatively charged. The easily pair up and separate in solution. Anything with a Cl on it that can do that is a salt. Anything in the same column as Na can do that because of the number of free electrons and the ease and stability of pairing. The reaction gets more volatile as you go down the list. Those are your big boom molecules when exposed to water quickly and in large quantity.