The Big Pivot: Merck Falters on Covid-19 Vaccine, Then Makes One for Rival J&J – WSJ – The Wall Street Journal

Weeks after Merck & Co. scrapped development of its Covid-19 vaccines in January, one of its senior manufacturing officials began phoning his deputies, telling them their work on a pandemic shot wasn’t actually over.

The twist: Merck would manufacture the vaccine from an arch rival.