Paxlovid has been given to Biden and millions of Americans infected with COVID-19. In the U.K., it sits on the shelf. By: MarketWatch July 27, 2022 at 09:50 AM EDT Paxlovid is rarely used in the U.K., even with a supply of 2.75 million courses. Read More >> Related Stocks: Gsk Plc ADR Merck & Co Pfizer