The World Celebrates Pfizer's 90% COVID-19 Vaccine Efficacy Data, With Cautious Caveats

 
• By Jessica Merrill

Pfizer's vaccine for COVID-19 outpaced expectations on efficacy, driving a stock market rally and garnering reaction from Vice President Pence and President-elect Biden.

Hands clapping, applause
Positive COVID-19 vaccine data was applauded by investors and the public • Source: Shutterstock

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