USA – Pfizer to broaden diversity of COVID-19 vaccine trial

Pfizer Inc. Chief Executive Officer Albert Bourla said it’s “likely” the U.S. will deploy a Covid-19 vaccine to the public before year-end and that the company is prepared for that scenario, pushing back against more tepid expectations shared by health authorities.

Bourla said Sunday on CBS’s “Face the Nation” that he’s “quite comfortable” that the vaccine the company is developing in partnership with BioNTech SE is safe and that it could be available to Americans before 2021, contingent on an approval from U.S. regulators at the U.S. Food and Drug Administration…