Single Dose of Pfizer Vaccine Is 85% Effective, Study Shows

A single shot of the Pfizer-BioNTech vaccine is 85% effective in preventing symptomatic disease 15 to 28 days after being administered, an Israeli study found—news that could help in setting vaccine priorities world-wide.A single shot of the Pfizer-BioNTech vaccine is 85% effective in preventing symptomatic disease 15 to 28 days after being administered, an Israeli study found—news that could help in setting vaccine priorities world-wide.Read MorePAIDWSJ.com: US Business

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