World News Roundup: 12/17

New Omicron warnings as cases spread just a week before Christmas. Schools on guard against TikTok threats. Comforting the youngest tornado survivors. CBS News Correspondent Steve Kathan has today's World News Roundup. To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices