Pfizer vaccine neutralizes Brazil and U.K. variants of Covid-19: Lab study

There’s new optimism surrounding Pfizer’s coronavirus vaccine’s ability to fight against the rapidly spreading new variants. CNBC’s Meg Tirrell reports.

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Watch the first health workers receive Pfizer’s Covid-19 vaccine in New York

Two health workers in New York volunteer to be the first people vaccinated in the state. For access to live

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Jim Cramer on the U.K. approving Pfizer’s Covid-19 vaccine for general use: ‘This is monumental’

The U.K. on Wednesday authorized the Pfizer-BioNTech vaccine for emergency use, marking another step in the global battle against the

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Moderna reports positive data on early-stage coronavirus vaccine trial, shares surge

CNBC’s Meg Tirrell delivers the latest on Moderna’s trial of a coronavirus vaccine. Moderna’s closely watched early-stage human trial for

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