Pfizer Inc. said its Covid-19 pill reduced hospitalizations and deaths in high-risk patients by 89%, a result that has the potential to upend how the disease caused by the coronavirus is treated and alter the course of the pandemic. The shares surged.
The drugmaker said in a statement on Friday that it was no longer taking new patients in a clinical trial of the treatment “due to the overwhelming efficacy” and planned to submit the findings to U.S. regulatory authorities for emergency authorization as soon as possible.
