Stephen Krahling was a published cancer researcher when vaccine maker Merck brought him on board as a virologist in 1999. That’s when he says he found himself embroiled in an all-hands-on-deck ...

"If someone is fully vaccinated against measles (two doses) and has not had a major immunocompromising condition occur (e.g., ...

Scientist Stephen Krahling worked on a project at Merck called “Protocol 7” and was uniquely positioned to blow the whistle on what he learned.