salma abdelaziz, cnn, london. >>> thanks for spending part of your day with me. i'm michael holmes. anywhere. mr. kim brunhuber will be here in just a moment with more "cnn newsroom." what's on the horizon? the answers lie beyond the roads we know. we recognize that energy demand is growing, and the world needs lower carbon solutions to keep up. at chevron, we're working to find new ways forward, like through our venture capital group. backing technologies like electric vehicle charging, carbon capture and even nuclear fusion. we may not know just what lies ahead, but it's only human... to search for it. flowers are fighters. that's why the alzheimer's association walk to end alzheimer's is full of them. because flowers find a way to break through. just like we will. join the fight at alz.org/walk >>> hello and welcome to all of you watching us here, in the united states, canada, and all around the world. i'm kim brunhuber. >>> coming up on "cnn newsroom." rising-covid cases, slowing vaccination rates, and more people being sent to hospital. all this, as mask mandates are making a c

salma abdelaziz is standing by in london. i read the strain accounts for some 99% of new covid cases there. that is incredible. but how big of a worry really is this? >> reporter: i think everyone is really watching and waiting to see what happens here in the uk because quite unintentionally, this has become the battleground for that great battle between vaccines and variants. because you have a highly vaccinated population here, over 85% of adults have received at least the first dose, at the same time you have the delta variant first identified in india, described as aggressive and highly transmissible, spreading quite quickly. so the highest number of cases reported yesterday, over 26,000, highest number of cases seen since late january. government officials will argue with you that the number that actually matters is the death toll. so, yes, over 26,000 cases, but 14 deaths. i'll compare that to late january the last time that the case number was that high. at that point, there was 1245 deaths. so 14 deaths versus over 12

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salma abdelaziz is live in london with this story. you have been on this from the very beginning.the past, what are some of the lessons from the greenfield tragedy? >> reporter: i've been speaking to some of the survivors, the grieved family members of that tower. and they told me they watched those pictures playing out in miami like it was a nightmare all over again. they said that their hearts go out to those families suffering through that pain. they see them as being in chapter one of what is going to be a long journey to fight for the justice for their own, but to fight for changes to make sure it doesn't happen again. take a look. the early hours of june 14th, 2017. a fire sparked by a kitchen appliance engulfs the tower in a matter of minutes. families wake up to find themselves trapped inside an inferno. from her apartment on the 22nd floor, a terrified nadia calls her brother. he quickly rushes to the scene. >> you can see and feel it from that distance so far away. you literally feel the heat. >> reporter: for hours the blaze burned on. nadia was spotted desperateler wav