Most of the vaccines developed seem to work pretty much the same, by targeting the same spike protein. And I am also far from being a microbiologist either, but

Most of the vaccines developed seem to work pretty much the same, by targeting the same spike protein. And I am also far from being a microbiologist either, but I do know that the immune system is very complex, so I would not rule anything out, when messing with it. In any case, getting the vaccination can (maybe) actually increase your risk of a severe Covid sickness, when you are exposed to real covid virus at the same time. https://onlinelibrary.wiley.com/doi/10.1111/ijcp.13795 https://onlinelibrary.wiley.com/doi/10.1111/ijcp.13795 And I have no data for it and I can imagine it being hard to get reliable data about it, but autoimmune sickness is on the rise. I am not sure a quickly hacked together vaccine can rule that possibility out.