live from cnn headquarters, live for those watching here in canada, united states and around the world, i'm kim brunhuber. this is "cnn newsroom." ♪ we begin with an encouraging sign of progress in the u.s. vaccination campaign against the coronavirus. half of all americans are now fully vaccinated, according to data released friday, despite that, the number of new cases keeps growing. now topping 100,000 per day. and in florida, the delta variant is spreading at unprecedented speed. we're talking about 20,000 new cases per day on average. florida had more than 134,000 new cases total over the past week. the highest number since the pandemic began. but the white house is making it clear, the nation isn't headed for another lockdown. nick valencia has the latest on