My specialty is quantum physics but because of the pandemium I was interested in physical methods applied to virology. Today's physics is at nanolevel manufacturing so I suppose it can solve problems with viruses too.
As far as I know to force the organism to produce antibodies one can introduce the capsid or the envelope of the virus in it. I wonder if the following method below is used to collect capsids of a virus.
Method: I know it is possible to remove the nucleus of a cell. So lets take a number of cells from a human and extract the nuclea. Then put a huge number of the viruses in a culture with the cells. The viruses will inject their the DNA (or RNA) in the cells thereby leaving their capsids outside. But the cell can not reproduce the virus because there is no nucleus. Now one can separate the human cells with the viruses's DNA from the capsids and use the capsids to create antibodies by directly injecting as a vaccine.