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the Pfizer Inc. and The BioNTech SE Covid-19 vaccine appeared to prevent the vast majority of recipients in Israel from becoming infected, providing the first real-world indication that immunization will slow transmission of the coronavirus.
The vaccine, which was implemented in a national immunization program that began Dec. 20, was 89.4% effective in preventing laboratory-confirmed infections, according to a copy of a draft post that was posted on Twitter and It was confirmed by a person familiar with the work. The companies and Israel’s Ministry of Health worked together on the preliminary observational analysis, which has not yet been peer-reviewed.
The results, also reported in Der Spiegel, are the last of a Series of Positive data emerging from Israel, which has given more Covid vaccines per capita than anywhere else in the world. Almost half of the population has received at least one dose of vaccine. Separately, Israeli authorities said Saturday that the Pfizer-BioNTech injection was 99% effective in Preventing deaths from the virus.
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The first results of laboratory-confirmed infections are important because they show that the vaccine can also prevent asymptomatic carriers from spreading the virus that causes Covid-19, something that was not clear until now. Stopping transmission in this way is a key factor as countries seek to remove contact restrictions and reopen economies.
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Pfizer and BioNTech said they are working on a real-world analysis of the Israel data, which will be shared as soon as it is complete. Spokesmen declined to comment on unpublished data.
Four-fifths of the virus cases in Israel during the study time period, January 17 to February 6, were the most transmissible strain first identified in the UK. Israel’s vaccination campaign started just before the so-called B.1.1. Variant 7 emerged, fueling infections and causing a third shutdown on January 8.
As of February 6, approximately 27% of people Aged Those aged 15 and over in Israel were fully vaccinated, and the Pfizer-BioNTech vaccine was the only vaccine available in the country at the time. People were considered to be fully vaccinated and included in the analysis if the data collected was more than 7 days after receiving their second dose.
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