Wow, you really do not understand how immunity works at all, do you?
The purpose of a vaccine is not to load up your blood with a stand-alone virus protein that will compete for cell surface receptor binding with the same protein located on the surface of virus particles.
The purpose of a vaccine is to teach your immune system to make T- and B- cells and antibodies against the virus protein. The job of the T-cells is to kill cells that have that protein because they are infected. The job of B-cells is to make antibodies that attach to the protein. Those antibodies prevent the protein from functioning by physically blocking its ability to attach to ACE2 receptors and other cell components that allow the virus to enter the cell.
The zoonotic nature of SARS-CoV-2 means that it can jump back and forth between humans and animals, like many other viruses. However, this does not mean that there will remain a natural reservoir of SARS-CoV-2. Once it has jumped into an animal population (deer, for example), its evolution is shaped by deer biology, not human. Thus, any SARS-CoV-2 circulating in deer is becoming better at infecting deer and may eventually become incapable of infecting humans.
The first SARS coronavirus disappeared once that pandemic was controlled in 2003. It has not been found again, even though it, too, came from an animal reservoir.
You do not understand these “vaccines” which are not. And the specious notion of the generation of T and B Cells to provide antibodies against antigenic viruses. Please, talk to the inventor of mRNA Dr. Robert Malone. I understand immunity far better than you ever will. Can assure you of that. Utter bilge, and one might add provenanced opinion of a “grant” researcher. We’re done here. Dr. Malone can explain it to you.