to spread in other parts of the world, really. ithink to spread in other parts of the world, really. i think that will be the deciding information. find world, really. i think that will be the deciding information.- the deciding information. and in terms of the the deciding information. and in terms of the spread. the deciding information. and in terms of the spread. it - the deciding information. and in terms of the spread. it was - the deciding information. and in terms of the spread. it was first | terms of the spread. it was first officially identified in south africa, just a week ago, and the world health organization declared it a variant of concern on the 26th of november but it seems that it would have been circulating before that and one scientist at least has said that it is likely it emerged in september or october. where are you in terms of understanding how far back it might have been circulating? so this can be quite hard to tell because obviously around the world, g