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days. i'm pamela brown, in wash was washington. welcome to our viewers in the united states and around the world. you are in the "cnn newsroom," on this saturday. and across much of america, the masks have come off. covid numbers have gone up. and reality sets in. this nation is facing a pandemic of the unvaccinated. new cases are trending up, in 49 states. and with that spread, more deaths, more hospitalizations. the rise mainly caused by the highly-contagious delta variant, and the highly-politicized anti-vaccine crusade. more leaders on the state and local level are now implementing or at least considering new restrictions, in hopes of reigning in the escalating numbers. just under half of all americans are fully vaccinated. pushing herd immunity, for now, out of reach. meanwhile, the fda and cdc are exploring a possible-booster dose of covid-19 vaccine. but as of now, only for people considered immunocompromised.