Shares of Moderna (NASDAQ: MRNA) rose 4.9% to a record closing high of $246.66 on Wednesday, as health officials warned of the potential for another wave of COVID-19 infections later this year.
New coronavirus strains, such as the Delta variant, are spreading rapidly in the U.S. and other parts of the world. They’re driving a rebound in COVID-19 case counts in many areas, which is fueling calls for governments to step up their vaccination efforts.