I’ve been vaccinated against all kinds of things—small pox, polio, measles, mumps, DPT, etc. I’m never going to get those things. I’ve also been vaccinated against Covid, and for whatever reason, that vaccine is not always effective. Personally, I think it’s because of the ever changing nature of the disease. But whatever. So if it doesn’t neccessarily prevent the disease, but provides some help, then it’s not a true vaccine. So what is it? We need a new word. Vaccine-ish? Semi-vaccine? Demi-vaccine?
Personally, I think we should demote it to just Covid shot. Because, like flu shots, it doesn’t always work as well as we wish. But calling it a vaccine is off the mark, in my opinion.