Moderna Plunges After Melanoma Data Leak — SkimNews

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- Moderna shares plunged after cancer-vaccine data were shared on social media, with leaked melanoma figures threatening the company’s record August rally.
- Moderna and Merck said their mRNA cancer vaccine cut both death and recurrence by 42%.
Why it matters: Moderna shareholders faced an immediate plunge after the record August rally once melanoma-vaccine data were shared on social media. The key tension is between that market move and Moderna and Merck’s stated 42% cut in death and recurrence, making the disclosure route and timing central to the episode.
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