Pfizer plans to test COVID-19 vaccine booster engineered for South African variant
By Michael ErmanNEW YORK, Feb 18 (Reuters) - A top Pfizer Inc scientist said on Thursday the company is in intensive discussions with regulators to test a...
By Michael ErmanNEW YORK, Feb 18 (Reuters) - A top Pfizer Inc scientist said on Thursday the company is in intensive discussions with regulators to test a...