On Oct. 14, 2021, Moderna confirmed that the U.S. Food and Drug Administrationﾒs (FDA) Vaccines and Related Biological Products Advisory Committee (VRBPAC) recommended that the FDA grant an Emergency Use Authorization (EUA) for a booster dose of the Moderna COVID-19 vaccine (mRNA-1273) at the 50 ﾵg dose level for people aged 65 and older; people aged 18 to 64 who are at high risk of severe COVID-19; and people aged 18 to 64 whose exposure to COVID-19 puts them at risk for COVID-19 complications or severe illness.

The positive vote was unanimous with 19 VRBPAC members recommending EUA. The booster dose was to be administered at least six months after completion of the primary series.