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Read this ...https://www.theguardian.com/world/2020/dec/14/how-a-new-covid-strain-may-have-spread-virus-in-south-of-england
If the virus does mutate into a resistant form, vaccines can be tweaked to make them effective again.
not4sale
My virology knowledge is limited but I presume the vaccine is only applicable to the previous strain of covid. The vaccine will not then be effective on the new variant???