The first Phase 3 data for a cancer vaccine has raised questions about whether the potential new treatment is needed.

Source: [MarketWatch](https://www.marketwatch.com/story/the-real-test-for-modernas-cancer-vaccine-isnt-about-beating-keytruda-its-keeping-cancer-from-coming-back-in-the-long-term-da9af99f?mod=mw_rss_topstories)

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