Moderna, Merck breakthrough could usher in cancer vaccines

Two drug companies, Moderna and Merck, tested a personalized cancer vaccine combined with an existing immunotherapy drug on melanoma patients and reported successful results in a large trial. The vaccine is designed to prevent the cancer from returning. Doctors believe this approach could eventually be used against other types of cancer.

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National story. 96 articles from 64 sources. 62 are on the bar; 2 are international, entertainment or tech outlets, listed separately. Updated Aug 22, 2026.

How each side is putting it

Left

16 sources
St. Louis Post-DispatchLean Left· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

The WeekLean Left· Aug 20, 2026

Moderna says skin cancer vaccine trial a success

The Boston GlobeLean Left· Aug 20, 2026

What Moderna’s vaccine trial results might mean for the future of cancer care

PBS NewsHourLean Left· Aug 20, 2026

Moderna shares surge after it says experimental mRNA cancer treatment passed key test

NBC NewsLean Left· Aug 19, 2026

Potential new skin cancer vaccine

Center

36 sources
Ran by 4 outlets· Bismarck Tribune, Casper Star-Tribune, +2 more
Bismarck TribuneCenter· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

Casper Star-TribuneCenter· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

Omaha World-HeraldCenter· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

Richmond Times-DispatchCenter· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

Casper Star-TribuneCenter· Aug 21, 2026

Cancer vaccine breakthrough 'a monumental leap forward'

France 24Center· Aug 21, 2026

'Breakthrough' mRNA cancer drug curbs melanoma in large trial

KETK TylerCenter· Aug 21, 2026

Experimental vaccine could prevent melanoma cancer from returning

NewsweekCenter· Aug 20, 2026

Moderna's Cancer Vaccine Could Change America in 7 Surprising Ways

Right

10 sources
Billings GazetteLean Right· Aug 22, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

Watch Dog ReportRight· Aug 21, 2026

mRNA Cancer Vaccine Delivers Breakthrough Results

TribliveLean Right· Aug 20, 2026

New mRNA vaccine therapy for skin cancer could be ‘paradigm shift’

Fox NewsRight· Aug 20, 2026

Cancer vaccine prevents deadly melanoma from returning or spreading in landmark trial

Billings GazetteLean Right· Aug 20, 2026

Vaccine cuts melanoma spread and recurrence

Other outlets

International, entertainment and tech outlets, by their rating. Not counted in the bar above. How we count coverage

Left

2 articles
GizmodoLeft· Aug 20, 2026

Moderna and Merck’s mRNA Melanoma Vaccine Looks Like a Game Changer

Al JazeeraLean Left· Aug 19, 2026

Moderna, Merck unveil mRNA-based cancer vaccine that cuts spread

Center

0 articles

None

Right

0 articles

None

The story so far

3 developments
  1. Aug 19Moderna, Merck mRNA cancer vaccine prevents melanoma from returning in trial
  2. Aug 20Moderna cancer vaccine stops melanoma returning: what’s next for personalized treatments?
  3. Aug 21Cancer vaccine breakthrough 'a monumental leap forward'

Who covered each development

No new developments

Quiet for 58 days

Last development · Aug 21 — Cancer vaccine breakthrough 'a monumental leap forward'

The bigger story

This story is one of several related ones. Here's where it sits.

You are hereAug 19, 2026

Moderna, Merck breakthrough could usher in cancer vaccines

3 developments · 64 sources