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Pfizer Vaccine Cuts Covid Infections by 70% After Single Dose: U.K. Study
Posted
February 23, 2021
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1:56Now PlayingNew findings in the U.K., the first country in the western world to roll out Covid-19 vaccines, show the shots provide a high level of protection against infection, illness and death after a single dose.
Initial data in medical workers show the Pfizer Inc. and BioNTech SE vaccine reduces the risk of infection by more than 70% with one dose -- or 85% after the second dose -- according to Public Health England. The findings suggest the shot helps interrupt transmission, officials said.
“We’re showing that not only are you reducing symptomatic infection, you are reducing the number of those with asymptomatic infection as well,” Susan Hopkins, strategic response director to the health authority in England, said in a briefing. “Reducing infection is key to reducing transmission.”
That report, along with separate findings in Scotland, highlight the significant impact the inoculations are already having in countries with the most advanced campaigns to protect their populations. The Pfizer vaccine also appeared to stop the vast majority of recipients in Israel from becoming infected, according to a draft publication confirmed by a person familiar with the work.
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