On Apr. 7, 2021, Moderna announced publication of antibody persistence data out to 6 months following the second dose of the Moderna COVID-19 Vaccine in The New England Journal of Medicine. This study analyzed 33 healthy adult participants in the NIH-led Phase 1 study of Modernaﾒs COVID-19 Vaccine at 6 months following the second 100 ﾵg dose (day 209).

As detected by three distinct serologic assays, antibodies elicited by the Moderna COVID-19 vaccine persisted through 6 months after the second dose.