Pfizer’s early data shows its vaccine is more than 90 percent effective.
The company announced stunning early results from its coronavirus vaccine trial, cementing the lead in a frenzied global race that has unfolded at record-breaking speed.
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Pfizer’s early data shows its vaccine is more than 90 percent effective.
The company announced stunning early results from its coronavirus vaccine trial, cementing the lead in a frenzied global race that has unfolded at record-breaking speed.