Coinspeaker Moderna (MRNA) Stock Falls Around 7% Now after Company Starts Its Phase 2 Clinical TrialsIt has been revealed that Moderna has already enrolled the first participants in its phase 2 clinical trial testing of the mRNA-1273 vaccine. Meanwhile, today MRNA stock is down.Moderna (MRNA) Stock Falls Around 7% Now after Company Starts Its Phase 2 Clinical Trials