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 2:19 San Francisco barbershop struggles to stay open after pandemic 0:51 Alameda County using dogs to detect COVID 3:57 Interview: Doctor's perspective on COVID 4 years after shutdown started 2:27 Marking 4 years since COVID-19 shut down the Bay Area 2:09 CDC updates COVID isolation guidelines