RE:New details on Covid variant in BritainSadly...
Potentially similar to flu vaccine
Tang said it may be that, as with the flu vaccine, the COVID-19 vaccine may need to be tweaked regularly, too, to fight new strains.
"So maybe a year from now, you might see a few more new mutations that may start to affect the vaccine. So the vaccine for the year after next may have to be tweaked with a different protein antigen coding gene to fit the new virus. And we do this for influenza every year. So it's not a big thing. It's not an alarming thing."
https://www.cbc.ca/news/health/british-coronavirus-strain-investigating-1.5842431