Recently greek letters were introduced to remove the geographic stigma [1] , so that would read as "the Alpha strain now being the main one in Sweden"

Besides risking moral overtones ("the British strain? Typical - when they aren't being Hollywood baddies they're busy incubating viruses") it only tagged where a strain was first isolated, not necessarily its geographic origin (not that it actually matters whether the Kent variant actually came from that Home County)

[1] https://www.abc.net.au/news/2021-06-08/covid-19-variants-del...