Moderna Inc. has agreed to do a placebo-controlled trial of its new Covid vaccine that was recently approved by US regulators, Health and Human Services Secretary Robert F. Kennedy Jr. said Tuesday.In a post on X,

U.S. Health and Human Services Secretary Robert F. Kennedy Jr. said on Tuesday that Moderna has agreed to a true placebo-controlled trial of its new COVID-19 vaccine. While noting that he was aware of concerns about the Food and Drug Administration's limited approval of the new mRNA vaccine for high-risk populations,

By Stephanie Brown HealthDay ReporterTUESDAY, June 3, 2025 (HealthDay News) -- The U.S. Food and Drug Administration has approved a new lower-dose vaccine for active immunization against COVID-19 caused by severe acute respiratory syndrome coronavirus 2.