morning," a major change in the fight against covid. the cdc changing its guidance on isolation times for people infected or exposed to the virus. why the changes are being made now. plus, the concern about covid cases in children spiking and the decision apple is making. new video showing the moments involv a police-involve shooting of a 14-year-old girl in a store. what the lapd is now revealing. paying even more at the grocery store. what experts are predicting

about food costs in the new year and how much higher prices can go. a massive explosion as a plane crashes into a neighborhood in southern california. videos on social media are leading teens to self-diagnose rare disorders they likely don't have. later the batman is back. the new trailer that shows the caped crusader and catwoman getting cozy. good tuesday morning. i'm andrew dymburt. >> i'm rhiannon ally in for mona. we want to begin with the new guidelines from the cdc on the amount of time covid patients need to isolate. >> they're being shortened amid growing concern about virus-related staffing shortages at hospitals as the omicron

variant spreads. there's a concern about a spike in pediatric covid cases, raising questios about returning to class. meanwhile wait times for a covid test are more than four hours in some places. president biden said we have to do better. >> we begin or coverage from washington. >> reporter: we're seeing the new wave of covid-19 disrupt different sectors. apple is closing 20 stores nationwide, about half in new york. in sports the nfl has more players infected this month alone than all of last season. cases of the omicron variant surging across the nation casting concerns over fast approaching new year celebrations. the u.s. now averaging more than 206,000 new covid-19 cases each day. a number that has more than doubled since thanksgiving. the cdc updating its guidance for asymptomatic americans who

test positive for covid, from ten to five days, then wearing a mask for another five days. >> we want to get people back to the jobs, particularly those with essential jobs to keep our society running smoothly. >> reporter: other health experts echoing that sentiment. >> i think it's a terrific move. there's really no reason we need t be isolating people for ten days. we have good evidence that most people, particularly those vaccinated and boosted, are not contagious that long. >> reporter: the wave of new covid cases prompting a rush for testing. children's cases are rapidly climbing as well. nearly 200,000 new kids tested positive for covid last week, up 50%. this includes sebastian, his mother saying she regrets not

vaccinating him. >> when you're looking at your child and you don't know if they're going to live, you don't know if they're going to make it, it's such a struggle to see. >> reporter: dr. fauci also suggests it might be time to require proof of vaccination to fly domestically. andrew? >> thank you. the nightmare continues for holiday travellers with more than 500 flights canceled today. that number is going up. covid related staffing shortages are being blamed for thousands of flight cancellations since christmas eve. more than 1,400 yesterday alone. some flights were grounded by stormy weather which moved into the northeast leaving roads slick from pennsylvania to new england. in the west record setting snow fall has closed the closure of

roads in the area. breaking overnight, four victims are dead after a shooting spree in the denver area. three people, including a police officer, were wounded. the violence played out across several locations including a shpping area and a hotel. police say the suspect was killed. the victims' names have not been released. new video showing the moments before a young girl was killed during a police-involved shooting inside a los angeles department store. she was with her mother in a dressing room. police responded to reports of a man carrying a gun. turns out the man didn't have a gun. some viewers may find the video disturbing. los angeles police releasing dramatic video of the moment a teenage girl was killed. >> she's bleeding! >> i got her. >> reporter: police last thursday were called to the

burlington store in north hollywood. >> i have a hostile customer in my store. >> reporter: you can see the suspect acting erratically. at one point he's holding a bike above his head. he's then seen attacking customers before making his way back up to the shopping area. police enter the store with guns drawn. they make their way to the second floor. lopez can be seen ambushing a shopper. on this body camera video, you can see the moment officers move in. >> she's bleeding! >> hold up. >> i got her. >> reporter: with those three shots, lopez falls to the floor and would later die at the scene. police say one of those bullets penetrated the wall behind lopez

entering a dressing room striking and killing this girl, the 14-year-old was there with her mother trying on dresses for her birthday. >> we at the lapd would like to express our most heart felt condolences for the loss of this innocent victim. >> reporter: officials say the officer is now on paid leave pending the review. the shooting prompting outrage from the latino a fund-raising website has been set up for valentina's family. a small plane crashing into a neighborhood outside san diego. the flaming wreckage could be seen in the streets. no reports of any victims on the

ground. investigators are looking into what caused the jet to fall out of the sky. the plane left hundreds without electricity. the truck driver whose 110-year prison sentence sparked backlash all across the country. he's now one step closer to getting his sentence reduced. prosecutors are seeking a lower sentence for the man who said his brakes failed. the district attorney said the driver is responsible, but she agreed the sentence is too harsh. >> given the conduct and in consultation with the victims and survivors, we will likely be recommending a sentence between 20 to 30 years when the court is ready to go to that step. >> a judge set a hearing for january 13th. police in south florida are searching for the hit and run driver who killed two children.

it happened just outside of ft. lauderdale. four other kids were injured. they were between 1 and 10 years old. there's no sign yet that a verdict is near in the sex trafficking trial of ghislaine maxwell. she's accused of recruiting and grooming young girls for jeffrey epstein. jurors wanted to review the testimony of the four accusers and the housekeeper. they asked for the legal definition of enticement. fire crews in denver have been battling a grass fire. dry, gusting conditions today mean the fire danger will be high. >> it's a time for a look at your tuesday weather forecast. >> good morning. the winter chill continues across the northwest. snow into tuesday morning

portland down to medford. here in our nation's mid section, chicago on tuesday could get its first measurable snow of the season with a wintry mix stretching into the northeast. the heaviest snow will be into minneapolis. it's warm in the southeast. record highs could fall in atlanta. coming up, a different kind of chase. the police officer confronted by an angry b■ull. >> incredible video there. also, the growing problem of teenager on tiktok. diagnosing themselves with mental health disorders they

check out this bull with some beef for an officer. a highway patrol officer in northern california had to take off after a runaway bull charged at him near the officer did get away. if you think food prices are high right now, wait until next year. major food companies are expected to increase prices on everything, from meat to soup, to even cookies. up to 20% next month. kraft says its price hike will be 5%. we have an alert for parents this morning about videos on tiktok that are promoting teens to diagnose themselves with personality disorders. it can have a major impact on their mental health. "the wall street journal" was the first to report on this. >> reporter: this morning, a troubling trend on tiktok. >> can you make a video about the symptoms of borderline

personality disorder? >> reporter: kids watching videos like this and diagnosing themselves with personality disorders they likely don't have. samantha said she spent hours diagnosing herself after watching the videos. >> i remember seeing the videos on my page about people saying, here's signs you may have this disorder. it was bipolar or borderline or all these rare disorders. >> reporter: the west virginia high school senior, who had been diagnosed with anxiety and depression at age 10, says the constant stream of videos seriously damaged her mental health. >> my mind, like, would be, like, maybe i don't have just depression and anxiety. maybe it's something else. >> reporter: videos with hash disorder. >> it occurs between 6 and 9. >> reporter: many made by teens,

young adults or people claiming to be therapists. >> if you spend 15 minutes, 30 minutes, 60 minutes, viewing people talk about these disorders over and over again, that can make it seem like these conditions are more prevalent than they actually are in the world. >> reporter: experts urge parents to keep lines of communication open, just like samantha and her parents did. >> after working with the therapist for a long time, i started realizing, you know, i don't have borderline. i don't have bipolar. >> reporter: in fact, samantha says she found staying off of her cell phone was the best thing she could do. >> thank you for that. coming up, what we are learning about the sudden death of an award-winning hollywood director. also ahead, the unfriendly skies. the latest cause of air rage caught on camera. what sparked this fight?

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5,000 reports of unruly passengers this year alone. we turn to that award-winning hollywood director who died suddenly at age 58. we're learning the cause of his death. this morning, tributes pouring in for emmy award-winning director, jean-marc vallee. >> i'm holding on to this idea for perfection. >> reporter: he directed "big little lies" and "dallas buyers club." he passed away at the age of 58. the cause was a heart attack. vallee was found in his cabin in quebec, canada. it's believed he died on christmas day. his death coming as a shock. he was known as a health enthusiast who abstained from drinking and exercised frequently. he was known to practice the wim

hof method, aimed at boosting energy and the immune system. >> i can sue the hospital to get my medicine? >> reporter: some of hollywood's biggest names are posting heartfelt tributes. matthew mcconaughey who won an oscar for his work under vallee's direction, with the words, with a gentle hand and heart, jean-marc was a true receiver. and reese witherspoon saying, i will always remember you as the sun goes down. i love you, jean-marc. until we meet again. justin trudeau saying, jean-marc vallee's passion for filmmaking and story telling was unmatched. vallee leaves behind two children. in sports, the dolphins were in control on "monday night football" after a first quarter pick six against the saints. they're 20-3 win is their seventh-consecutive victory after losing seven-straight.

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this box appears to be the one that crews were looking for. it is believed to be filled with civil war artifacts and abraham lincoln in his coffin. >> they opened another time capsule, to find books and a coin. a trailer is out for the upcoming batman movie. >> it features robert patterson, as gotham's caped crusader, getting close with catwoman. >> who are you? what are you hiding? >> don't throw your life away. >> don't worry, honey. i have nine of them. >> can't wait for this one. the film features colin farrell as the penguin. imagine giving up the internet for a month. >> the makers of kahlua want couples to spend more time with each other so they have a challenge. the company will pay a couple $25,000 if they can go internet-free for 30 days. you have to pass a polygraph

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>> cutting isolation time, cdcs updated guidelines on how long you should isolate if you test positive but don't have symptoms. >> covid cases up in the bay area. some companies breaking records. what this means for the next few weeks. >> a deadly plane crash causing a fiery scene. investigators heading to the san diego area. >> temperatures dipping below freezing in some areas. we have the forecast. it is tuesday, december 28. you are watching us live on abc 7, hulu live, and wherever you stream. >> we thank you so much for joining us. first we start off with francess dinglasan for a look at the forecast. frances: we could sprinkles and rain and snow is on