just in, the major move from the supreme court on immigration. the high court keeping title 42 in effect for now. what that means for the surge at the border. shelters full. migrant families forced to sleep in the cold. thousands more in tents, waiting to cross, desperate for food and warmth. coming clean. incoming congressman george santos who lied on his resume. will he face consequences when he gets to washington? inside the fight against medical misinformation and children. what you need to know. and riding it out. the stories of strangers surviving a historic snowstorm and finding time to help while trying to stay warm. it s inspiring america. announcer: this is nbc nightly news with lester holt. and good evening. i m tom llamas in for lester tonight. after that holiday deep freeze and deadly historic snowstorm that s still affecting so many americans, it s an airline meltdown that leads our news this evening. southwest airlines again canceling thousands of f
among school-age children have dropped 4.5% over the last three years. we worry about things like measles, mumps, rubella and other diseases that have largely been controlled and now we re seeing increased hesitancy there. reporter: thanks to misinformation? thanks to misinformation. reporter: at a local clinic, dr. dale brasser says flu shots are down too. even as the nation deals with one of the worst flu seasons in years. we re only about half of the typical number of flu injections that we would typically see by this time of the year. it worries me to a great extent. reporter: used to battling disease, the oklahoma city health department now finds itself also fighting lies about vaccine safety. how dangerous is misinformation? it s cost lives. i mean, i don t know how else to say it. it s about as dangerous as it gets. reporter: the department has had to move resources to monitor public sentiment, using new technology to comb through social media. when vaccine messa