I stumble across these normies on Quora all the time that say mRNA is a vaccine. WRONG.
Real vaccines would use live attenuated whole viruses in them to trigger your innate non-specific antibodies to respond. mRNA genetically modifies your DNA to tell your cells to manufacture spike proteins from the original or subvariant C19 strains.
You cannot acquire immune memory if you're only vaccinating with a piece of the virus, in order to vaccinate you need an attenuated (small amount) of WHOLE virus to enter your immune system so that your natural immune system can deal with them.
Despite vaccines entering your body unnaturally via syringe, if you're injected with a small amount of whole virus, your body will send antibodies and will later acquire immune memory so that if it comes in contact with the virus (or its subvariants) again that it will protect you next time resulting in either zero infection or minor (less severe) infection.
This is what the normies don't get, they think just the spike protein will give them immunity. NO. You need whole viruses to do that. That's why "fully vaccinated" are still getting it, some are getting it multiple times.
Why? Well, not only are they not getting the whole virus, but they are telling their natural immune system to basically stand back while "specific antibodies" take over which leaves you wide open for other subvariants and other viruses. Not only that, you're weakening your cytotoxic CD8 killer t-cell production, which are basically your soldiers to fight off the virus that is replicating. NOT ONLY THAT, but you are now producing a toxic spike protein that is a DNA repair inhibitor that is constantly triggering an immune response which will result in an auto-immune deficiency leaving you wide open for virus and disease.
EDIT: I'm not advocating for live attenuated whole viruses vaccines at all, vaccines contain aluminum, mercury, toxic adjuvants and other byproducts that cause inflammation resulting in things like autism, allergies, and a whole host of other inflammatory, neurological and dermatological side effects. It is always best that you get the virus naturally as God intended in order to get the best immune memory response. You're also opening up yourself to your body attacking itself if you inject un-naturally which is very dangerous.
They don't have a purified, isolated sample of the original supposed "COVID-19 Virus", so to think they have actually isolated and purified another strain of said virus, is absolutely ridiculous.
That bit is what I’m still looking into, if you are injected with a “whole virus” or get it naturally, are you protected fully or partially? For how long does the memory last? It may be different depending on the strain. But at least if you get it naturally, your immune system will recognize the virus despite it being a different variant, resulting in less severe (2-3 day sickness) experience.