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A Phase 4, Randomized, Observer-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of mRNA-1283 And mRNA-1273 Variant-Containing Formulation in Adults 50 to 64 Years of Age Without Underlying Conditions That Put Them at High Risk for Severe Outcomes From COVID-19

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Trial Profile

A Phase 4, Randomized, Observer-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of mRNA-1283 And mRNA-1273 Variant-Containing Formulation in Adults 50 to 64 Years of Age Without Underlying Conditions That Put Them at High Risk for Severe Outcomes From COVID-19

Status: Recruiting
Phase of Trial: Phase IV

Latest Information Update: 17 Jan 2026

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At a glance

  • Drugs Elasomeran (Primary) ; MRNA 1283 (Primary)
  • Indications COVID 2019 infections
  • Focus Adverse reactions; Therapeutic Use
  • Sponsors Moderna Therapeutics

Most Recent Events

  • 17 Dec 2025 New trial record
  • 15 Dec 2025 Status changed from not yet recruiting to recruiting.

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