coronavirus April 6, 2021 10:44 am Moderna COVID-19 Vaccine Lasts at Least 6 Months The Moderna vaccine offers protection against COVID-19 for at least six months, according to a report in the New England Journal of Medicine. 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