Executives with Pfizer, Moderna say they're ramping up vaccine supplies

Executives with Pfizer and Moderna said the companies are ramping up their supply of coronavirus vaccines, with shipments expected to double and possibly triple in the coming weeks, in congressional testimony Tuesday. In a prepared statement before a House subcommittee Tuesday, John Young, Pfizer's chief business officer, is expected to say the company plans to increase its delivery capacity of 4 million to 5 million doses a week to more than 13 million by mid-March. Richard Nettles, the vice president of medical affairs at Johnson & Johnson, said the company plans to have enough of their single-dose Covid-19 vaccine for 20 million Americans by the end of March.