Will we get a single, variant-proof vaccine for Covid?

The goal of a universal vaccine would have seemed a fantasy only a few years ago. But not now…This week the government announced additional vaccine booster jabs for the over-75s and suggested a further shot is likely to be needed in the autumn. But imagine if the next Covid vaccine jab you have were the last you would ever need. That’s a dream being actively pursued now by researchers, who feel it could be possible to make a “universal” vaccine against the Sars-CoV-2 vir