Walter Reed Army Hospital may have developed a general vaccine that will work against both past and future variants of COVID-19, indeed against the whole family of spike-protein-using coronaviruses.
If this pans out, it’s a game-changer. Except, I suspect, for the 3% of the population that is immunosuppressed (most commonly due to anti-rejection meds for transplants or to various chemotherapies), but even they benefit if everyone around them is vaxxed.
Some help is on the way for the immunosuppressed too in the form of a new monoclonal antibody COVID-prevention treatment that lasts up to six months and is about 70% effective.