U.S. COVID vaccine supply to be boosted by Merck helping make J&J vaccine
March 02, 2021 at 10:32 AM EST
The U.S. COVID-19 vaccine program is expected to get a welcome jolt on Tuesday in the news that one of the biggest vaccine makers in the world will help make Johnson & Johnson's one-dose jab, potentially doubling the supply from what J&J could achieve on its own.
