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Single Pfizer Shot Cut 85% of Cases in Israel Health Workers (1)

Feb. 19, 2021, 8:14 AM

A single dose of the vaccine from Pfizer Inc. and BioNTech SE reduced Covid-19 infections by 85% in a study in Israel, bolstering the U.K.’s decision to speed immunizations by delaying a second shot.

Among health-care workers who got the vaccine, symptomatic infections were reduced by that percentage in the 15 to 28 days after the first dose, compared with those who didn’t get a shot, according to the report in The Lancet medical journal. While most workers received a second dose on schedule -- about three weeks after the first -- the booster would only have just started to...

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