teuchter
je suis teuchter
I'm not sure; I think it might be saying something slightly different which is that a new variant will have a harder time establishing itself if there's still a reasonable amount of 'old' version circulating, because it will be competing with it for hosts. The implication of that would be that a UK with very low covid prevalence this summer would be more at risk of seeing a new variant take hold, than a UK with quite high prevalence would be.i think it might be saying that, If there's a place where not much covid has happened at all yet, then that place is a great spreading ground for any new version because people's immune systems will be.. naive?
So back in Summer 2020, lots of cities would have been not much use at generating new variants, which same places, now, would be (?)
Nope i have no idea. Still confused.