> The large majority of the cost (about $850) was the peptides. These are the main active ingredients of the vaccine: short segments of proteins from the COVID

> The large majority of the cost (about $850) was the peptides. These are the main active ingredients of the vaccine: short segments of proteins from the COVID virus. They’re all <25 amino acids, so far too small to have any likely function as proteins (for comparison, COVID’s spike protein has 1273 amino acids). I know nothing about making vaccinations, but what would happen if you made a vaccine with a huge number of random protein segments? Would it prime your immune system to make you immune to several yet to be discovered viruses? Or it's just useless and/or dangerous to do this?