it s a large number of cases and it s a it s a large number of cases and it s a big it s a large number of cases and it s a big problem. it s a large number of cases and it s a big problem. here in the uk boris johnson it s a big problem. here in the uk boris johnson has it s a big problem. here in the uk boris johnson has said it s a big problem. here in the uk boris johnson has said the - borisjohnson has said the overwhelming evidence is that over is relatively mild. is that the evidence so far in united states as well? , , . ., , , well? the best evidence does come from the uk well? the best evidence does come from the uk and well? the best evidence does come from the uk and south well? the best evidence does come from the uk and south africa. - well? the best evidence does come from the uk and south africa. we l from the uk and south africa. we have from the uk and south africa. we have not from the uk and south africa. we have not had the chance to build up a