Moderna Agrees to Placebo-Controlled Covid Vaccine Trial: RFK Jr

June 3, 2025, 9:36 PM UTC

Moderna agreed to a “true placebo-controlled trial” of a new mRNA Covid vaccine, says Health and Human Services Secretary Robert Francis Kennedy Jr.

  • The new vaccine is “similar to the existing mRNA vaccine but uses a smaller protein,” Kennedy says in a post on X
  • The FDA will monitor and collect data throughout the trial for every adverse outcome: Kennedy

To contact the reporter on this story:
Bryan Pietsch in Washington at bpietsch3@bloomberg.net

To contact the editors responsible for this story:
Kasia Klimasinska at kklimasinska@bloomberg.net

Airielle Lowe

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