in a year of troubling and tragic milestones it s a relief to mark a positive achievement and today we can. one in every five americans has now received at least one dose of a coronavirus vaccine and case numbers are falling. but spring break travel could combine with loosening coronavirus restrictions to derail this process. these are images out of miami beach florida. packed, not a mask in site. 1.3 million people were screened at u.s. airports and it could all end up with a new case spike. they are begging americans to wear masks regardless of what local rules say. coronavirus restrictions are loosening up from coast to coast, but one of the states are warning that if there was ever a time to wear a mask, it is now. i appeal to the leaders, look at the data, take some risks in your political base if you need to, but do the right thing. they re deeply concerned that machineries are letting their guard down getting on planes in record numbers and by clustering up on sp
taylor. live from cnn world headquarters, welcome to all of you watching here in the united states, canada, and under the world. this is cnn newsroom . okay, let s start with some good news. at least one in five adults in the united states is vaccinated. but spring break travel could undo this progress. you re looking at the scene friday in miami beach florida. people are packed together, not a mask in site. more than 1.3 million people were screened at airports on friday. it could add up to a new case spike. they re begging americans to keep wearing masks no matter what local rules say. coronavirus restrictions are loosening up from coast to coast, but if there was ever a time to put on a mask, this is it. i would just appeal to all of the votes, all of the people that have people s lives in their hands. look at the data. take some risks with your political base if you need to, but do the right thing. they re also concerned that americans are betting their guard down
that s what people can do. you ll also help the health system from being overwhelmed. essential workers should be in that category. we need to think about what will happen. i haven t gotten covid yet, but i probably will and i need to think about how to help my colleagues if that happens. yeah. we are hearing that over and over. i have a friend who was a doctor who said the same thing. he got covid and expects that a lot of people who go to work, their co-workers will experience that very same thing. let s go to gary in the nation s capitol. d.c. has the second highest two-week case spike in the nation behind only florida. but gary, you say health officials are worried they might be undercounting positive cases. why is that? yeah. i m at a pcr testing site, city-run, here in d.c. we are seeing lines at this location not to what sam has seen but lines across the city. but these take two or three days for results to come back. and if you re having symptoms and you re in this line, yo
the country. i want to bring in nbc s heidi przybyla in washington d.c. where the two-week case spike is higher than all 50 states. school starts up next week. in addition to the testing-driven policies to try to get kids in school and keep them in school, what are you hearing? reporter: that s what they re trying to do. if you look at the big urban districts, they re all trying to send children back in person. some of them with additional measures and some of them with no additional measures on top of the hygiene measures they ve already taken. before the break, the cdc outlined an approach they say is the gold standard. we ve seen it work in other states like massachusetts. it s called test to stay. but it s very labor intensive. it requires testing all students twice a week as long as they are negative, even if they ve been exposed. they can come back into the classroom. new york, even with all the resources the state is pouring in there, is not doing a. they are doing random sa