I guess there will be an American variant of Covid for us to worry about soon alongside the European (UK), Brazilian and South African variant, if you let these things go mostly uncontrolled they mutate. Presumably there will not be a Kiwi, Aussie, Thai or Chinese variant.
There is a Yorkshire Covid variant, but as we cannot sell it for money, we are not letting anyone else have it!
Probably likewise with the Scottish variant (lol).