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Kits to americans, but there is no where to get on when they will be shipped out. along testing lines and school uncertainty edge. jonathan is live for us in atlanta, the home to the cdc, good morning to you. >> we have some breaking news to tell you about. the fda has authorized covid booster shots manufactured by pfizer for children as young as 12. at that still needs to be signed off on by the director of the cdc. that may come sometime later this week. the cdc is facing some criticism from medical experts for not requiring a negative covid test as part of its updated guidance for reducing ...

Another 1,000 flights canceled today with airlines still crippled by staffing shortages and jetblue canceling nearly 1,300 flights through the middle of january. testing lines still stunningly long. the pressure rising for hospitals across the country. ten states and washington, d.c. are seeing some of the highest hospitalization numbers in the pandemic. in georgia, six major health systems report collectively seeing a 100% to 200% invees in hospitalizations. unvaccinated most likely hopsized but admissions now at a record high, vast majority of children admitted are unvaccinated. they're smal...

The midst of a travel rush partly to blame for another spike in flight cancellations. >> they say the reason the flights were canceled were crew available due to covid. >> reporter: more than 2,000 domestic flights saturday and sunday wiped away on one of the busiest travel stretches of the year. >> jetblue, for example, has canceled 10% of their flights. that's a huge amount of inconvenienced people. that's what i would call a meltdown. >> reporter: it doesn't soften the blow for many. >> it's kind of difficult. there's been delays in the lines as well as in the flights. pretty much just regu...

You know, or a far out concept. this is a potential reality. >> reporter: florida today recording a record 32,800 cases as testing lines blanket this park, spilling into streets on the same site there's vaccinations offered in this parking lot, and as you can see, it's empty. five minutes in and out, which is part of the problem. the unwillingness of millions to get the shot, leading frontline workers to witness harrowing last regrets. >> when someone is dying in front of your face and you see in their eyes the guilt, you know, what if, what if i would have gotten the vaccine, that is what we ...

Asymptomatic or symptoms getting better. >> it had a lot to do with what we thought people would be able to tolerate. if we can get them to isolate, we want to make sure they're isolating in the first five days when they are maximumly infectious. >> reporter: 85 to 90% of transmission occurs in the first five days of symptom onset. still, the new guidance is drawing fierce debate among health experts. >> there is absolutely no data i'm aware about with the omicron variant that supports people coming out of isolation five days after they were first diagnosed with the virus. >> you either shut d...