plus, a deadly race. 21 runners dying at a high elevation when hail, high winds and freezing temperatures swoop in. how an ultra marathon turned into an extreme test of survival. welcome to the lead. i m jake tapper and we start today with our health lead and a return to pre-pandemic life for many americans. crowded restaurants, live music, fans in the stands. america largely appearing open for business in many places as covid cases, deaths and hospitalizations are at their lowest point in months and continuing to trend down, and a key milestone for vaccinations. 25 states and washington, d.c. have now fully vaccinated at least half of their adult populations and nine states have more than 7 a% of their adult populations partially vaccinated this. good news comes as new scrutiny begins about the or since of the deadly coronavirus. cnn has learned that a u.s. intelligence report found in a several researchers at china s wuhan lab were hospitalized in november 2019. the chi
they didn t expect this variant to come around. so they have a lot more people than normal calling out sick who are testing positive and then who have to stay in isolation for ten days. reporter: airline workers who have been vaccinated and have breakthrough covid infections now have to quarantine for ten days from the onset of symptoms following cdc guidelines. the airline industry has asked the cdc to cut that time in half. while some medical experts think that s a good idea, others say it s dangerous. i understand where it s coming from given the pressures on the industry but i don t think it s the right move. the surge of cases is already bad enough. we don t need to make it worse by lowering that isolation protocol number. reporter: even with the omicron surge there s a huge spike in airline travel. i m going to california. i m nervous. i don t know if it s the best decision to make but i haven t seen my family in two years. reporter: the latest covid surge c
hello and welcome to bbc news. the hollywood actor, alec baldwin, says there are no words to convey his shock and sadness, after he shot two people with a gun being used as a prop, on the set of his new film. halyna hutchins, who was the film s director of photography died, and the director, joel souza, was injured. detectives have questioned mr baldwin, but say no one has been arrested. sophie long has more from los angeles. halyna hutchins described herself as a restless dreamer and adrenaline junkie. the 42 year old was considered by her peers to be an exceptionally talented cinematographer. i met her at a film festival, and within just a few moments of talking to her, i felt like she had such a strong vibe, such a sense of commitment to art, and like the sort of integrity of wanting to make cinema, that i wanted to work with her. she was on set at the bonanza creek ranch in new mexico when the shootings and deaths depicted on the 19th century western they were filming bec
it s time for click. this week, we re at the biggest show on earth. there will be robots, poetry, and the biggest screen you ve ever seen. # ladies and gents, this is the moment you ve waited for. # in the heat of dubai. # your sweat soaking through the floor. yes, it s a year later than planned, but it s finally on, world expo 2020 has opened its doors and we re finally on the ground to see the spectacle. dubai has turned an enormous section of desert into an event where nearly every country under the sun gets to wave its flag and show off its ideas on a world stage. # tell me do you want to go? # where it s covered in all the coloured lights? the hype has been huge, so it s time to see if it s lived up to its promise. time to find out if this is the greatest show. 192 countries, 192 pavilions, all different, some extravagant, some just bonkers. and maybe, just maybe, some world changing ideas hidden amongst them. who knows? maybe it s the robot helpers delivering food, givi