The thing that no one seems to talk about with the vaccines (and natural coof) is memory cells. Coof can kill you because it can take two weeks to start pumping out antibodies (adaptive immunity) and if your innate immune system gets overrun in that time it may be too late. Memory cells last for decades and bring the response time to five or so days and unless you are already on deaths door you will have antibodies by the time symptoms appear. This obsession with antibodies constantly being present seems to be a pretext for the everlasting boost.