Moderna and Merck's wild gambit on a cancer vaccine appears to have worked, despite big doubts, logistical challenges, and pandemic-era complications.

Merck and Moderna’s success with a personalized cancer vaccine designed to keep melanoma at bay opens a new avenue of treatment that doctors hope will work against many types of…

The personalised vaccine has succeeded in a final-stage melanoma trial. Here’s how it works, when it could become available and why researchers hope the approach can be used…