I’ve said it before, but it bears repeating: acquired immunity from contracting Covid-19 has not been established. This could be due to a lack of viable “memory cells” in certain people, or any number of reasons, which allow them to get reinfected. Covid also mutates rapidly. If we are to have a vaccine, it’s going to look something like the seasonal flu shot. The difference is that, practically speaking, there are a set number of strains of influenza. Each year, the CDC and WHO predicts the three or four strains that will be most transmissible and virulent, then produce and distribute vaccines accordingly.I think having a disease from which you recover provides better immunity than a vaccine, but I’m not 100% sure about that. I’ve had Covid so the vaccine may be useless to me unless it provides immunity to multiple strains for which I am not immune. In that case I’d get it. I have no problem being a guinea pig for science. I’ve used myself as a guinea pig for much worse things without a second thought .
On the other hand, we don’t know enough about the covid-19 virus, except that it mutates very quickly. One possibility is it will continue to mutate into hundreds of sister candidates, but only the fittest will survive. Once we know how the virus behaves in the longer term, we (The CDC; WHO, FDA) is be able to effectively inoculate the public. This could take a decade to get right.