According to a Reuters report, the woman in charge of procuring possible COVID-19 treatments for Britain said a fully effective vaccine might never be developed, and that any early versions that do get approved might not work at all for some people.
No Time for ComplacencyThere is no clinically proven vaccine against the coronavirus, though nearly 200 candidates are in development worldwide, and late-stage trial results are expected for the first of them by the end of 2020.
“However, we do not...
https://mfame.guru/imperfect-vaccines-to-make-early-covid-vaccines-less-impactful/