moderna vaccine 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 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