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this seems to show the new subvariant is more contagious, kelly? >> reporter: they believe it's one and a half times more transmissable. that accountfor the spread we're seeing. here in d.c. health fishes say of the test results they have tracked, to more than 60% of the positive cases have been this ba.2 variant. >> kelly o'donnell at the white house. thank you. we are learning more about a massive fire in a northern california home depot late yesterday and the desperate efforts to evacuate crowds of shoppers and dozens of workers. steve patterson has that >> reporter: from above a molten fireball erupting in the sky, cop suming thousands of square feet burning for hours, turning the hardware store's content into kindling, shrouding suburban san jose into a plume of black smoke. on the ground panic. breaking out at 5:30