Pfizer rose over 9% in premarket trading as its antiviral pill cut risk of severe COVID-19 by 89%<blockquote>辉瑞(Pfizer)在盘前交易中上涨超过9%,其抗病毒药物将严重COVID-19的风险降低了89%</blockquote>
A trial of Pfizer Inc's experimental antiviral pill for COVID-19 was stopped early after the drug wa