May 6, 2021 8:04 am Early Data Shows Moderna Vaccine Highly Effective in Teens Moderna reported on Thursday that early data shows high effectiveness in its coronavirus vaccine trial in adolescents ages 12 to 17. US & World Videos 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up 0:52 Lifeguard shortage impacts LA County pool hours 2:17 LA County: Mask Mandate Could Return in Weeks 2:22 Avoiding a COVID Winter Surge