How the Deadly Delta Variant Could Boost Pfizer's and Moderna's COVID Vaccine Sales

New dangerous coronavirus variants aren't on the way to the U.S. -- they're already here.

Many Americans have begun to feel increasingly confident that the worst of the COVID-19 outbreak is behind us. In India, though, the story is much worse. A mutation of the novel coronavirus called the Delta variant swept across the sub-continent. Unfortunately, this strain appears to be more contagious and more severe than earlier variants.

It didn't take very long for the Delta variant to spread to other countries. As of last week, it accounted for more than 10% of new cases of COVID-19 in the U.S.

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Source Fool.com