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Positive mid-stage data validating an mRNA flu vaccine strengthens the investment case for GSK's vaccine portfolio and the broader mRNA strategy. The Phase 3 progression is a tangible near-term catalyst that could drive multiple expansion if readouts are favorable; risk remains if Phase 3 underwhelms or timelines shift.
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GSK said it will advance its mRNA-based seasonal influenza vaccine candidate into a late-stage trial after mid-stage data showed stronger immune responses than current standard- and high-dose vaccines. This milestone could boost the value of GSK's mRNA platform and broaden its flu franchise, with Phase 3 results likely serving as the key near-term catalyst.
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