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Why did Moderna stock tumble nearly 10% after hours today?

The regulator said the Phase 3 study comparator did not reflect the “best-available standard of care,” though it raised no safety or efficacy concerns. ・Moderna said the refusal conflicts with prior ...

Moderna Receives Refusal-to-File Letter from the U.S. Food and Drug Administration for Its Investigational Seasonal Influenza Vaccine, mRNA-1010

Refusal to review the submission is inconsistent with feedback at pre-Phase 3 and pre-submission consultations; Moderna ...